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Journal articles on the topic 'Ferrite magnetic nanoparticles'

Author: Grafiati

Published: 10 March 2023

Last updated: 31 July 2025

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1

Swaminathan, R., J. Woods, S. Calvin, Joseph Huth, and M. E. McHenry. "Microstructural Evolution Model of the Sintering Behaviour and Magnetic Properties of NiZn Ferrite Nanoparticles." Advances in Science and Technology 45 (October 2006): 2337–44. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2337.

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The sintering of RF plasma synthesized NiZn ferrite nanoparticles was studied. The as-synthesized nanoparticles have been modeled as having a core-shell structure with richer Zn concentration on the surface. Most Zn cations occupy tetrahedral sites typical of zinc ferrites, while some of the Zn cations occupy tetrahedral sites in a (111) oriented surface layer in the form of ZnO. Ni and Fe cations show no evidence of such disorder and their positions are consistent with the bulk spinel structure. This core-shell structure evolves by decomposition of the as-synthesized nanoparticles into Ni-and

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Zhang, Qian;, Idoia; Castellanos-Rubio, Rahul; Munshi, et al. "Model Driven Optimization of Magnetic Anisotropy of Exchange-Coupled Core-Shell Ferrite Nanoparticles for Maximal Hysteretic Loss." Chemistry of Materials 27, no. 21 (2015): 7380–87. https://doi.org/10.1021/acs.chemmater.5b03261.

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This study provides a guide to maximizing hysteretic loss by matching the design and synthesis of superparamagnetic nanoparticles to the desired hyperthermia application. The maximal heat release from magnetic nanoparticles to the environment depends on intrinsic properties of magnetic nanoparticles (e.g., size, magnetization, and magnetic anisotropy) and extrinsic properties of the applied fields (e.g., frequency and field strength). Often, the biomedical hyperthermia application limits flexibility in settings of many parameters (e.g., nanoparticle size and mobility, field strength, and frequ

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Andrade, Priscyla L., Valdeene A. J. Silva, Kathryn L. Krycka, et al. "The effect of organic coatings in the magnetization of CoFe₂O₄ nanoparticles." AIP Advances 12, no. 8 (2022): 085102. http://dx.doi.org/10.1063/5.0078167.

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Cobalt ferrite has attracted considerable attention in recent years due to its unique physical properties, such as high Curie temperature, large magnetocrystalline anisotropy, high coercivity, moderate saturation magnetization, large magnetostrictive coefficient, and excellent chemical stability and mechanical hardness. This work focuses on the neutron scattering results of the magnetic response characteristics of polysaccharide fucan coated cobalt ferrite nanoparticles for their application as a solid support for enzyme immobilization and other biotechnology applications. Here, we unambiguous

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Tambe, Sunanda, and R. Y. Borse. "Effects of Al Doping with Zinc Ferrite Nanoparticles on Structural, Magnetic and Dielectric Properties." Material Science Research India 19, no. 3 (2022): 150–60. http://dx.doi.org/10.13005/msri/190306.

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Zinc ferrite nanoparticles have wide range of the applications in the field of Electronics, Optoelectronics, Magnetics, Solar cell, Photocatalysts. With Al doping we modify their structural, magnetic and electrical properties of zinc ferrite (ZnFe2O4). In the present studies, zinc ferrite nanoparticles were prepared by sol gel method using glycine as combustion agent. The effects of Al doping concentration on the structural, morphological, optical, magnetic and electrical properties of zinc ferrites were studied. In x-ray diffraction patterns analysis confirmed the formation of the cubic spine

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.Sowmya, G. "Synthesis and Characterization of Samarium-Doped Nickel-Cobalt Ferrite Nanoparticles for Advanced Magnetic Applications." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 07 (2025): 1–9. https://doi.org/10.55041/ijsrem51168.

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Nanoparticles of samarium-doped nickel-cobalt ferrites with the formula Ni₀.₇Co₀.₃Fe₂₋ₓSmₓO₄ (x = 0.00 and 0.015) were successfully synthesized using the citrate gel auto-combustion method. X-ray diffraction analysis confirmed the formation of a pure cubic spinel phase, with a slight reduction in lattice constant from 8.3502 Å to 8.3319 Å as samarium content increased, indicating the substitution of Sm³⁺ ions into the spinel lattice. The crystallite size decreased from approximately 35.2 nm for the undoped sample to 23.5 nm for the doped sample, reflecting the influence of samarium on grain gr

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Dhariwal, Jyoti, Ravina Yadav, Sheetal Yadav, et al. "Magnetic Spinel Ferrite: An Efficient, Reusable Nano Catalyst for HMFsynthesis." Current Catalysis 10, no. 3 (2021): 206–13. http://dx.doi.org/10.2174/2211544710666211119094247.

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Aim: In the present work, the preparation and catalytic activity of spinel ferrite (MFe2O4; M = Fe, Mn, Co, Cu, Ni) nanoparticles to synthesize 5-hydroxymethylfurfural (HMF) have been discussed. Background: Ferrites possess unique physicochemical properties, including excellent magnetic characteristics, high specific surface area, active surface sites, high chemical stability, tunable shape and size, and easy functionalization. These properties make them essential heterogeneous catalysts in many organic reactions. Objective: This study aims to synthesize a series of transition metal ferrite na

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Al-Senani, Ghadah M., Foziah F. Al-Fawzan, Rasmiah S. Almufarij, Omar H. Abd-Elkader, and Nasrallah M. Deraz. "Magnetic Behavior of Virgin and Lithiated NiFe2O4 Nanoparticles." Crystals 13, no. 1 (2022): 69. http://dx.doi.org/10.3390/cryst13010069.

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A series of virgin and lithia-doped Ni ferrites was synthesized using egg-white-mediated combustion. Characterization of the investigated ferrites was performed using several techniques, specifically, X-ray Powder Diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and High-resolution transmission electron microscopy (HRTEM). XRD-based structural parameters were determined. A closer look at these characteristics reveals that lithia doping enhanced the nickel ferrite lattice constant (a), unit cell volume (V), stress (ε), microstrain (σ), and dislocation density (δ). It also enha

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Góes, Júlio C., Sónia D. Figueiró, Karlo David A. Sabóia, et al. "Exploring Dielectric and Magnetic Properties of Ni and Co Ferrites through Biopolymer Composite Films." Magnetochemistry 10, no. 4 (2024): 20. http://dx.doi.org/10.3390/magnetochemistry10040020.

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This study explores the synthesis and characterization of chitosan/gelatine films incorporating nickel ferrite (NiFe2O4) and cobalt ferrite (CoFe2O4) nanoparticles. The magnetic nanoparticles exhibit superparamagnetic behaviour, making them attractive for various applications, including biomedical uses. The X-ray diffraction analysis confirmed the successful synthesis of NiFe2O4 and CoFe2O4 nanoparticles, and the scanning electron micrographs illustrated well-dispersed ferrite nanoparticles within the biopolymer network, despite the formation of some aggregates attributed to magnetic interacti

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Petrova, Elena G., Yana A. Shavshukova, Dzmitry A. Kotsikau, Kazimir I. Yanushkevich, Konstantin V. Laznev, and Vladimir V. Pankov. "Thermolysis of sprayed suspensions for obtaining highly spinel ferrite nanoparticles." Journal of the Belarusian State University. Chemistry, no. 1 (February 21, 2019): 14–21. http://dx.doi.org/10.33581/2520-257x-2019-1-14-21.

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Thermal treatment of ferrite magnetic nanoparticles in NaCl matrix gives an opportunity to increase their specific magnetization with preservation of nanoscale size. Composite materials based on mixed ferrites Co0.65Zn0.35Fe2O4 and Mg 0.5Zn0.5Fe2O4 were synthesized by spray-drying of aqueous suspensions in presence of NaCl and annealed at 300 –900 °C. The microstructure and phase composition of nanoparticles before and after annealing were studied by scanning and transmission electron microscopy (SEM and TEM), X-ray diffraction analysis and IR spectroscopy. The magnetic properties of nanoparti

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Jezzini, Aya, Anne Davidson, Gilles Wallez, Jean-Marc Grenèche, Tayssir Hamieh, and Joumana Toufaily. "Zn-Ferrite and Hematite Dispersed by SBA-15 Silica Grains: Visible Light-Driven Photocatalytic Activity for Advanced Oxidation Process on Amoxicillin." Journal of Composites Science 9, no. 2 (2025): 73. https://doi.org/10.3390/jcs9020073.

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Nanoparticles of ZnFe2O4 and hematite with varied sizes and distributions were synthesized using the two-solvent method (cyclohexane, water) on SBA-15 silica batches. Calcination is performed in air at 700 °C (2 °C/min) with rapid quenching produced catalysts with distinct nanoparticle configurations, namely, internal zinc ferrite and external hematite. The choice of precursor was critical, and nitrate salts yielded only zinc ferrite nanoparticles, while chloride salts produced a mixture of hematite and zinc ferrite. The photocatalytic activity of these materials was evaluated under visible li

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Andrade, Raquel G. D., Sérgio R. S. Veloso, and Elisabete M. S. Castanheira. "Shape Anisotropic Iron Oxide-Based Magnetic Nanoparticles: Synthesis and Biomedical Applications." International Journal of Molecular Sciences 21, no. 7 (2020): 2455. http://dx.doi.org/10.3390/ijms21072455.

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Research on iron oxide-based magnetic nanoparticles and their clinical use has been, so far, mainly focused on the spherical shape. However, efforts have been made to develop synthetic routes that produce different anisotropic shapes not only in magnetite nanoparticles, but also in other ferrites, as their magnetic behavior and biological activity can be improved by controlling the shape. Ferrite nanoparticles show several properties that arise from finite-size and surface effects, like high magnetization and superparamagnetism, which make them interesting for use in nanomedicine. Herein, we s

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Pund, Sangita N., Pratik A. Nagwade, Arvind V. Nagawade, Shankar R. Thopate, and Arun V. Bagade. "Magnetic, morphological, and photocatalytic studies of Cu²⁺ doped Mg-Zn ferrite nanoparticles." IOP Conference Series: Materials Science and Engineering 1291, no. 1 (2023): 012007. http://dx.doi.org/10.1088/1757-899x/1291/1/012007.

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Abstract Due to their distinctive characteristics, including their optical, catalytic, electrical, and magnetic properties, spinel ferrite nanoparticles attract more interest. Also, the substitution of transition metals like copper in ferrites has the potential to control their physical characteristics and could improve their catalytic and magnetic capabilities. Cu2+ doped Mg-Zn ferrite samples show a change in behaviour from superparamagnetic to soft ferrimagnetic. The photocatalytic studies for the CuxMg0.5Zn0.5-xFe2O4 (x= 0.1 to 0.5, and Δx= 0.1) nano-ferrites are conducted in visible light

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C., Santhosh, Saranya M., Ramachandran R., et al. "Synthesis of magnetic nanoparticles and their effect on growth of carbon nanotubes." Journal of Indian Chemical Society Vol. 92, May 2015 (2015): 800–803. https://doi.org/10.5281/zenodo.5704154.

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Centre for Nanotechnology Research, VIT University, Vellore-632 014, Tamilnadu, India <em>E-mail</em> : anirmalagrace@gmail.com, anirmalagladys@gmail.com Mount Carmel College, Bangalore-560 052, India DST-INSPIRE Faculty, Department of Metallurgical Engineering and Material Science, IIT Bombay, Mumbai-400 076, India A series of spinel ferrite nanoparticles viz. manganese ferrite (MnFe<sub>2</sub>O<sub>4</sub> ), zinc ferrite (ZnFe<sub>2</sub>O<sub>4</sub> ), cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub> ) and nickel ferrite (NiFe<sub>2</sub>O<sub>4</sub> ) were prepared by solvothermal process

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14

Iacovita, Cristian, Gabriela Fabiola Stiufiuc, Roxana Dudric, et al. "Saturation of Specific Absorption Rate for Soft and Hard Spinel Ferrite Nanoparticles Synthesized by Polyol Process." Magnetochemistry 6, no. 2 (2020): 23. http://dx.doi.org/10.3390/magnetochemistry6020023.

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Spinel ferrite nanoparticles represent a class of magnetic nanoparticles (MNPs) with enormous potential in magnetic hyperthermia. In this study, we investigated the magnetic and heating properties of spinel soft NiFe2O4, MnFe2O4, and hard CoFe2O4 MNPs of comparable sizes (12–14 nm) synthesized by the polyol method. Similar to the hard ferrite, which predominantly is ferromagnetic at room temperature, the soft ferrite MNPs display a non-negligible coercivity (9–11 kA/m) arising from the strong interparticle interactions. The heating capabilities of ferrite MNPs were evaluated in aqueous media a

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15

JIAO, QIGANG, YI ZHANG, YA ZHAI, et al. "MAGNETIC PROPERTIES AND INDUCTION HEATING OF NiZn FERRITE NANOPARTICLES." Modern Physics Letters B 22, no. 15 (2008): 1497–505. http://dx.doi.org/10.1142/s0217984908016212.

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A series of nanoparticle powders of Ni x Zn 1-x Fe 2 O 4 (x = 0, 0.30, 0.40, 0.50, 0.55, 0.60, 0.70 and 1.0) ferrites was synthesized by the refluxing method at relatively low temperatures. The average size of nanoparticles is about 20 nm. The magnetic properties and induction heating behavior were investigated. On increasing the Ni content, x, from 0 to 0.50, the saturation magnetization and permeability increased, and then decreased with further increasing Ni content with the bulk Ni – Zn ferrite. The maximum value of magnetization was about 50 emu/g near x = 0.50, where the induction heatin

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Alzoubi, Gassem M. "The Effect of Co-Doping on the Structural and Magnetic Properties of Single-Domain Crystalline Copper Ferrite Nanoparticles." Magnetochemistry 8, no. 12 (2022): 164. http://dx.doi.org/10.3390/magnetochemistry8120164.

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Nanoparticles of Co-doped copper ferrite, Cu0.75Co0.25Fe2O4, were successfully synthesized by hydrothermal method. The preparation conditions were optimized to produce small nanoparticles with crystallite size of 20 nm that fall into the single-domain regime. The influence of Co-doping on the structure and magnetic properties of pure copper ferrite, CuFe2O4, was investigated. The prepared ferrite nanoparticles were found to be in a single structural phase with a spinel-type structure, according to the XRD and FT-IR measurements. When compared to pure Cu ferrite, the addition of Co increased th

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Fernandes, Ricardo J. C., Carlos A. B. Magalhães, Ana Rita O. Rodrigues, et al. "Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization." Nanomaterials 11, no. 4 (2021): 831. http://dx.doi.org/10.3390/nano11040831.

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The efficient photodegradation of textile dyes is still a challenge, especially considering resistant azo dyes. In this work, zinc/calcium mixed ferrite nanoparticles prepared by the sol–gel method were coupled with silver by a photodeposition method to enhance the photocatalytic potency. The obtained zinc/calcium ferrites are mainly cubic-shaped nanoparticles sized 15 ± 2 nm determined from TEM and XRD and an optical bandgap of 1.6 eV. Magnetic measurements indicate a superparamagnetic behavior with saturation magnetizations of 44.22 emu/g and 27.97 emu/g, respectively, for Zn/Ca ferrite and

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Rostamzadehmansoor, S., Mirabdullah Seyed Sadjadi, K. Zare, and Nazanin Farhadyar. "Preparation of Ferromagnetic Manganese Doped Cobalt Ferrite-Silica Core Shell Nanoparticles for Possible Biological Application." Defect and Diffusion Forum 334-335 (February 2013): 19–25. http://dx.doi.org/10.4028/www.scientific.net/ddf.334-335.19.

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Magnetic oxide nanoparticles with proper surface coatings are increasingly being evaluated for clinical applications such as hyperthermia, drug delivery, magnetic resonance imaging, transfection and cell/protein separations. In this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (CoFe2O4)/SiO2 and manganese doped cobalt ferrite nanoparticles (Mnx-Co1-xFe2O4 with x = 0.02, 0.04 and 0.06)/SiO2 for possible biomedical application. All the ferrites nanoparticles were prepared by co-precipitation method using FeCl3.6H2O, CoCl2.6H2O and MnCl2.2H2O as precursors,

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Zeshana, Ramzan, Haidar Qamarb, and Muhammad Azam. "Structural, magnetic, and electrical study of Ca, Ni, and Zn substituted Co-Cd ferrite." Science of Sintering, no. 00 (2025): 26. https://doi.org/10.2298/sos250312026r.

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Cobalt-cadmium ferrite nanoparticles have gained the attention of researchers due to their smaller particle size, high saturation magnetization, and high direct current (DC) resistivity. This study aimed to synthesize cobalt-cadmium nano ferrites doped with calcium, zinc, and nickel (CoCd1-xMxFe2O4, where M = Ca, Zn, and Ni) and to study the effect of calcium, zinc, and nickel on the properties of CoCdFe2O4. A chemical co-precipitation technique was used to synthesize the ferrite nanoparticles. Four different samples of cobalt cadmium ferrite nanoparticles were prepared and doped with calcium,

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Al-Khabouri, Saja, Salim Al-Harthi, Toru Maekawa, et al. "Free and partially encapsulated manganese ferrite nanoparticles in multiwall carbon nanotubes." Beilstein Journal of Nanotechnology 11 (December 29, 2020): 1891–904. http://dx.doi.org/10.3762/bjnano.11.170.

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Free and partially encapsulated manganese ferrite (MnFe2O4) nanoparticles are synthesized and characterized regarding structure, surface, and electronic and magnetic properties. The preparation method of partially encapsulated manganese ferrite enables the formation of a hybrid nanoparticle/tube system, which exhibits properties of manganese ferrite nanoparticles inside and attached to the external surface of the tubes. The effect of having manganese ferrite nanoparticles inside the tubes is observed as a shift in the X-ray diffraction peaks and as an increase in stress, hyperfine field, and c

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Gupta, Priyanka, Dr Ravi Kumar Vijai, and Subhash Chander. "Synthesis, Characterization and Magnetic properties of Nanoparticles of Cobalt Doped Ferrite." International Journal of Chemistry, Mathematics and Physics 6, no. 5 (2022): 06–11. http://dx.doi.org/10.22161/ijcmp.6.5.2.

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Ferrites are ceramic like material having magnetic properties which are being utilized for several applications. Cobalt ferrites are hard magnetic material with high coercivity. In our study Crystalline, Magnetic nanoparticles of Cobalt ferrite Co0.8Fe2.2O4 were synthesized by Sol Gel Method using ferric chloride and cobalt nitrate with NaOH as a reactant. Structural characteristics of samples were determined by X-Ray diffraction, FESEM and TEM. Particle size found 14.26nm by using Debye Scherrer method. Scanning electron microscopic (SEM) studies revealed nano-crystalline nature of the sample

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Yahya, Noorhana, Muhammad Kashif, Nadeem Nasir, Majid Niaz Akhtar, and Noorasikin Mohd Yusof. "Cobalt Ferrite Nanoparticles: An Innovative Approach for Enhanced Oil Recovery Application." Journal of Nano Research 17 (February 2012): 115–26. http://dx.doi.org/10.4028/www.scientific.net/jnanor.17.115.

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This Paper Describes the Synthesis of Cobalt Ferrite (CoFe2O4) Nanoparticles and their Application in Enhanced Oil Recovery. Cobalt Ferrite (CoFe2O4) Nanoparticles Were Used as Ferrite Magnetic Feeders with Antenna to Improve the Magnetic Field Strength and Cobalt Ferrite Nanofluid to Improve Oil Recovery. Cobalt Ferrite (CoFe2O4) Nanoparticles Were Synthesized by Sol-Gel Method. these Nanoparticles Were then Characterized by Using X-Ray Diffractometer (XRD) and Field Emission Scanning Electron Microscope (FESEM). Cobalt Ferrite Nanoparticles Annealed at 600oC, the Particle Size Is 51.17nm and

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Je, Hae June, and Byung Kook Kim. "Magnetic Properties of Mn-Zn Ferrite Nanoparticles Fabricated by Conventional Ball-Milling." Solid State Phenomena 124-126 (June 2007): 891–94. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.891.

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Mn-Zn ferrite nanoparticles were fabricated via conventional ball-milling and their magnetic properties were investigated. By ball-milling of Mn0.53Zn0.42Fe2.05O4 agglomerates for 48h with and without a dispersant (Darvan-C (ammonium polymethacrylate)), nanoparticles having average particle size of 60 nm were obtained. The saturation magnetizations (Ms) of thus obtained Mn-Zn ferrite nanoparticles were 49 and 62 emu/g for dispersant-added and dispersant-non-added one, respectively. When the nanoparticles were heat-treated at 400, however, the Ms became comparable: 63 and 65 emu/g. When the nan

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Alotaibi, M. A., I. Ud Din, A. I. Alharthi, et al. "Synthesis, Characterization, and Magnetic Behavior of Cobalt-Ferrite Nanoparticles under Variant Temperature Conditions." Физика твердого тела 63, no. 4 (2021): 513. http://dx.doi.org/10.21883/ftt.2021.04.50746.pss109.

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Wet chemical method was applied for the synthesis of cobalt-ferrite nanoparticles. The physicochemical properties were investigated by number of analytical techniques. TGA revealed the thermal stability of synthesized cobalt-ferrite nanoparticles. X-ray diffraction studies displayed the nanoparticles crystalline nature. Structure of cobalt-ferrite nanoparticles was confirmed via infrared spectroscopy by manifesting Co and Fe ions absorption peaks. Morphological studies showed synthesis of nanoparticles of cobalt-ferrite by employing field emissions scanning electron microscopy. The magnetic pr

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Alotaibi, M. A., I. Ud Din, A. I. Alharthi, et al. "Synthesis, Characterization, and Magnetic Behavior of Cobalt-Ferrite Nanoparticles under Variant Temperature Conditions." Физика твердого тела 63, no. 4 (2021): 513. http://dx.doi.org/10.21883/ftt.2021.04.50746.pss109.

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Wet chemical method was applied for the synthesis of cobalt-ferrite nanoparticles. The physicochemical properties were investigated by number of analytical techniques. TGA revealed the thermal stability of synthesized cobalt-ferrite nanoparticles. X-ray diffraction studies displayed the nanoparticles crystalline nature. Structure of cobalt-ferrite nanoparticles was confirmed via infrared spectroscopy by manifesting Co and Fe ions absorption peaks. Morphological studies showed synthesis of nanoparticles of cobalt-ferrite by employing field emissions scanning electron microscopy. The magnetic pr

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Amirov, Abdulkarim, Alexander Omelyanchik, Dmitry Murzin, et al. "3D Printing of PLA/Magnetic Ferrite Composites: Effect of Filler Particles on Magnetic Properties of Filament." Processes 10, no. 11 (2022): 2412. http://dx.doi.org/10.3390/pr10112412.

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Three-dimensional printing is one of the most promising areas of additive manufacturing with a constantly growing range of applications. One of the current tasks is the development of new functional materials that would allow the manufacture of objects with defined magnetic, electrical, and other properties. In this work, composite magnetic filaments for 3D printing with tunable magnetic properties were produced from polylactic acid thermoplastic polymer with the addition of magnetic ferrite particles of different size and chemical composition. The used magnetic particles were cobalt ferrite C

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Alsnani, Hind, Manal M. Khowdiary, and Mohamed S. A. Darwish. "The Magnetic Properties and Photoactivity of Bi-Magnetic Nanostructures for Hydrogen Production." Crystals 13, no. 10 (2023): 1527. http://dx.doi.org/10.3390/cryst13101527.

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The major challenge of hydrogen production via photocatalytic water-splitting is to utilize active photocatalysts that respond to a wide range of visible light. In this work, hybrid nanostructures purposed to combine the tunable magnetic behavior of soft/semi-hard magnetic particles have shown advantageous photoactivity. A series of photocatalysts based on ferrite nanoparticles, magnetite nanoparticles (MNPs), cobalt ferrite nanoparticles (CFNPs), magnetite nanoparticles coated on cobalt ferrite nanoparticles (MNPs @ CFNPs), and cobalt ferrite nanoparticles coated on magnetite nanoparticles (C

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Khizar, Sumera, Nasir M. Ahmad, Naveed Ahmed, et al. "Aminodextran Coated CoFe2O4 Nanoparticles for Combined Magnetic Resonance Imaging and Hyperthermia." Nanomaterials 10, no. 11 (2020): 2182. http://dx.doi.org/10.3390/nano10112182.

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Aminodextran (AMD) coated magnetic cobalt ferrite nanoparticles are synthesized via electrostatic adsorption of aminodextran onto magnetic nanoparticles and their potential theranostic application is evaluated. The uncoated and aminodextran-coated nanoparticles are characterized to determine their hydrodynamic size, morphology, chemical composition, zeta potential and magnetization. The aminodextran containing cobalt ferrite nanoparticles of nanometer size are positively charged in the pH range from 3 to 9 and exhibit saturation magnetization of 50 emu/g. The magnetic resonance imaging (MRI) i

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Alzoubi, Gassem M. "Observation of Spin-Glass-like Behavior over a Wide Temperature Range in Single-Domain Nickel-Substituted Cobalt Ferrite Nanoparticles." Nanomaterials 12, no. 7 (2022): 1113. http://dx.doi.org/10.3390/nano12071113.

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In this study, single-domain NixCo1−xFe2O4 ferrite nanoparticles with 0≤x≤1 were hydrothermally prepared and characterized using X-ray diffraction, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometry. According to the Rietveld refinement results, all of the prepared nanoparticles were single phase with spinel-type structures. Increasing the Ni content increased the average crystallite size and X-ray density while decreasing the lattice constant. According to the TEM observations, the nanoparticles were spherical in shape. T

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Muzzi, Beatrice, Martin Albino, Michele Petrecca, et al. "Defect-engineering by solvent mediated mild oxidation as a tool to induce exchange bias in single phase metal doped ferrites." Small Methods 7 (August 30, 2023): 2300647. https://doi.org/10.1002/smtd.202300647.

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The crystal site occupancy of different divalent ions and the induction of lattice defects represent an additional tool for modifying the intrinsic magnetic properties of spinel ferrites nanoparticles. Here, the relevance of the lattice defects is demonstrated in the appearance of exchange-bias and in the improvement of the magnetic properties of doped ferrites of 20 nm, obtained from the mild oxidation of core@shell (wüstite@ferrite) nanoparticles. Three types of nanoparticles (Fe0.95O@Fe3O4, Co0.3Fe0.7O@Co0.8Fe2.2O4 and Ni0.17Co0.21Fe0.62O@Ni0.4Co0.3Fe2.3O4) are oxidized. As a result, t

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Habib, Shaimaa A., Samia A. Saafan, Talaat M. Meaz, et al. "Structural, Magnetic, and AC Measurements of Nanoferrites/Graphene Composites." Nanomaterials 12, no. 6 (2022): 931. http://dx.doi.org/10.3390/nano12060931.

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As a contribution to the graphene-based nanoferrite composites, this article is intended to present Mn, Co, and Co-Mn nanoferrites for the preparation and investigation of such samples. Nanoparticles of Co ferrite, Mn ferrite, and Co-Mn ferrite were chemically synthesized by the coprecipitation method. The composites of ferrite/graphene were made by incorporating weight ratios of 25% graphene to 75% ferrite. Various structural and characterizing investigations of ferrite samples and ferrite/graphene composites were performed, including XRD, EDX, SEM, VSM hysteresis loops, AC conductivity, and

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Lin, Wenbin, Taeghwan Hyeon, Gregory M. Lanza, Miqin Zhang, and Thomas J. Meade. "Magnetic Nanoparticles for Early Detection of Cancer by Magnetic Resonance Imaging." MRS Bulletin 34, no. 6 (2009): 441–48. http://dx.doi.org/10.1557/mrs2009.120.

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AbstractThis article provides a brief overview of recent progress in the synthesis and functionalization of magnetic nanoparticles and their applications in the early detection of malignant tumors by magnetic resonance imaging (MRI). The intrinsic low sensitivity of MRI necessitates the use of large quantities of exogenous contrast agents in many imaging studies. Magnetic nanoparticles have recently emerged as highly efficient MRI contrast agents because these nanometer-scale materials can carry high payloads while maintaining the ability to move through physiological systems. Superparamagneti

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Unni P K, Varsha, Sumilha M, and Roshni A. "The Role of Nickel Ferrite Magnetic Nanoparticles in Medical Science." International Journal of Science and Research (IJSR) 10, no. 7 (2021): 310–17. https://doi.org/10.21275/sr21608094522.

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Tamboli, Qudsiya Y., Sunil M. Patange, Yugal Kishore Mohanta, Rohit Sharma, and Kranti R. Zakde. "Green Synthesis of Cobalt Ferrite Nanoparticles: An Emerging Material for Environmental and Biomedical Applications." Journal of Nanomaterials 2023 (February 6, 2023): 1–15. http://dx.doi.org/10.1155/2023/9770212.

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Research and utilization of nanotechnology are growing exponentially in every aspect of life. The constant growth of applications for magnetic nanoparticles, specifically nanoferrites, attracted many researchers. Among them, nanocobalt ferrite is the most crucial and studied magnetic nanoparticle. Environmentally benign synthetic methods became necessary to minimize environmental and occupational hazards. Green synthesis approaches in science and technology are now widely applied in the synthesis of nanomaterials. Herein, we reviewed recent advances in synthesizing nanocobalt ferrites and thei

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Fernandes, Ricardo J. C., Carlos A. B. Magalhães, Carlos O. Amorim, et al. "Magnetic Nanoparticles of Zinc/Calcium Ferrite Decorated with Silver for Photodegradation of Dyes." Materials 12, no. 21 (2019): 3582. http://dx.doi.org/10.3390/ma12213582.

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Magnetic nanoparticles of zinc/calcium ferrite and decorated with silver were prepared by coprecipitation method. The obtained nanoparticles were characterized by UV/Visible absorption, XRD, TEM and SQUID. The mixed zinc/calcium ferrites exhibit an optical band gap of 1.78 eV. HR-TEM imaging showed rectangular nanoplate shapes with sizes of 10 ± 3 nm and aspect ratio mainly between 1 and 1.5. Magnetic measurements indicated a superparamagnetic behavior. XRD diffractograms allowed a size estimation of 4 nm, which was associated with the nanoplate thickness. The silver-decorated zinc/calcium fer

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SINGH, JITENDRA PAL, R. C. SRIVASTAVA, H. M. AGRAWAL, and PREM CHAND. "RELAXATION PHENOMENA IN NANOSTRUCTURED ZINC FERRITE." International Journal of Nanoscience 08, no. 06 (2009): 523–31. http://dx.doi.org/10.1142/s0219581x09006456.

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The electron paramagnetic resonance (EPR) is a well known tool to investigate the magnetic relaxation phenomena in the magnetic particles. For the present investigation, temperature variant EPR has been performed in order to study the relaxation mechanism in zinc ferrite nanoparticles. The magnetic nanoparticles were synthesized by using the nitrates of zinc and iron, and citric acid. The particle size of the samples were measured by the X-ray diffraction and Transmission Electron Microscopy. A more precise, Williamson–Hall (W–H) approach was used for the determination of the particle size as

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Tsay, Chien-Yie, Yi-Chun Chiu, and Chien-Ming Lei. "Hydrothermally Synthesized Mg-Based Spinel Nanoferrites: Phase Formation and Study on Magnetic Features and Microwave Characteristics." Materials 11, no. 11 (2018): 2274. http://dx.doi.org/10.3390/ma11112274.

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Three kinds of magnesium-based spinel nanoferrites with the chemical formulas of MgFe2O4 (Mg ferrite), Mg0.9Mn0.1Fe2O4 (Mg-Mn ferrite), and Mg0.9Mn0.1In0.1Fe1.9O4 (Mg-Mn-In ferrite) were synthesized by hydrothermal route. We report the composition-dependent magnetic parameters and microwave properties of Mg-based ferrite nanoparticles. XRD results revealed that the Mg-based ferrite nanoparticles exhibited a cubic spinel structure and had an average nanocrystallite size in the range of 5.8–2.6 nm. Raman spectroscopy analysis confirmed the formation of cubic-spinel phase Mg-based nanoferrites. T

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Stolyar, S. V., O. A. Li, E. D. Nikolaeva, et al. "An Effective Method of Magnetic Hyperthermia Based on the Ferromagnetic Resonance Phenomenon." Физика металлов и металловедение 124, no. 2 (2023): 182–89. http://dx.doi.org/10.31857/s0015323022601490.

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Nickel and cobalt ferrite nanoparticles have been synthesized using the chemical precipitation method; the nanoparticle sizes were found to be 63 ± 22 and 26 ± 4 nm, respectively. The static hysteresis loops and Mössbauer spectra have been measured. It is shown that cobalt ferrite powders are magnetically harder than nickel ferrite powders. Ferromagnetic resonance (FMR) curves have been studied. It is found that the FMR absorption for cobalt ferrite is observed at room temperature and above. The time dependences of the nanoparticle warm-up under FMR conditions have been measured. The maximum t

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Wadhave, Mr. Vijaypal B., Mr. Anand B. Wadhave, and Mr. Chetan A. Bawane. "Synthesis of Cobalt Ferrite Nanoparticles: Characterization and Magnetic Properties." International Journal of Advance and Applied Research 5, no. 23 (2024): 242–44. https://doi.org/10.5281/zenodo.13622384.

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Abstract:  In this study, Cobalt ferrite nanoparticles (CoFe2O4) were synthesized via  hydrothermal technique at 180˚C for 6h using pomegranate fruit peels extract have been investigated. The structural properties of the produced cobalt ferrite nanoparticles were investigated using X-ray diffraction (XRD). The average grain size (D) measured using Scherrer equation is 25.35nm. Fourier Transform Infrared spectroscopy confirmed the formation of cobalt ferrite nanoparticles particles. Magnetic hysteresis was measured using a vibrating sample magnetometer in a maximum field of 15 kO

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I., Vedernykova, Koval A., Antonenko O., Kryskiv O., and Chan T. "Ferrite Magnetic Nanoparticles in the Design of Novel Drug Delivery Systems." Pharmaceutical and Chemical Journal 8, no. 2 (2021): 1–5. https://doi.org/10.5281/zenodo.13960739.

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The expediency of using the method of chemical condensation as a method of synthesis of ferrite nanoparticles for their use in drag delivery systems with magnetic properties has been proved. Partial replacement of iron (II) cations of magnetite Me<sub>x</sub><sup>2+</sup>Fe<sub>1</sub><sub>-x</sub><sup>2+</sup>Fe<sub>2</sub><sup>3+</sup>O<sub>4</sub> allows carry out synthesis in one stage without additional high-temperature ferritization. The particles synthesized according to this scheme have a size of up to 20-30 nm and the high magnetic parameters. When studying the functional parameters o

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M.Veerabhadraswamy, Lakshmi H.Bhagya, and J. Madhu B. "Synthesis and Characterization of Nano-crystaline CaFe2O4 via Solution Combustion Method from Solid Waste Egg Shells as Source of Calcium." International Journal of Engineering Research and Advanced Technology (IJERAT) 3, no. 1 (2017): 21–30. https://doi.org/10.5281/zenodo.250940.

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The liable application of solid egg shell waste obtained from food processing industry into biocompatible calcium ferrite nano materials will put in significance to the waste generated.Million tons of egg shell waste are produced every day which has contributed to environmental pollution.In this framework blending of nanotechnology with science, ensuing green chemistry moralities has led to arrival of innovative and improved technologies in the field of material science. Our present work aims at synthesis of calcium ferrite nanoparticles by solution combustion method using waste egg shells as

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Gupta, Meenal, Anusree Das, Dipankar Das, Satyabrata Mohapatra, and Anindya Datta. "Chemical Synthesis of Rare Earth (La, Gd) Doped Cobalt Ferrite and a Comparative Analysis of Their Magnetic Properties." Journal of Nanoscience and Nanotechnology 20, no. 8 (2020): 5239–45. http://dx.doi.org/10.1166/jnn.2020.18528.

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Lanthanum (La) and gadolinium (Gd) doped cobalt ferrite nanoparticles are synthesized using a soft chemical approach. The analysis of these ferrites using X-ray diffraction (XRD) and transmission electron microscopy (TEM) shows that lattice spacing decreases in the doped ferrite samples. Magnetization data indicates towards the decrease of saturation magnetisation but increase in coercivity with doping. Mössbauer spectroscopy measurements at room temperature indicate increased occupancy of trivalent cations at tetrahedral site. The addition of rare earth dopants reduces the hard-magnetic chara

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Lin, Qing, Jinpei Lin, Yun He, Ruijun Wang, and Jianghui Dong. "The Structural and Magnetic Properties of Gadolinium Doped CoFe2O4Nanoferrites." Journal of Nanomaterials 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/294239.

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Gadolinium substituted cobalt ferrite CoGdxFe2−xO4(x= 0, 0.04, 0.08) powders have been prepared by a sol-gel autocombustion method. XRD results indicate the production of a single cubic phase of ferrites. The lattice parameter increases and the average crystallite size decreases with the substitution of Gd3+ions. SEM shows that the ferrite powers are nanoparticles. Room temperature Mössbauer spectra of CoGdxFe22−xO4are two normal Zeeman-split sextets, which display ferrimagnetic behavior. The saturation magnetization decreases and the coercivity increases by the Gd3+ions.

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Saykova, Diana, Svetlana Saikova, Yuri Mikhlin, Marina Panteleeva, Ruslan Ivantsov, and Elena Belova. "Synthesis and Characterization of Core–Shell Magnetic Nanoparticles NiFe2O4@Au." Metals 10, no. 8 (2020): 1075. http://dx.doi.org/10.3390/met10081075.

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In this study, NiFe2O4@Au core–shell nanoparticles were prepared by the direct reduction of gold on the magnetic surface using amino acid methionine as a reducer and a stabilizing agent simultaneously. The obtained nanoparticles after three steps of gold deposition had an average size of about 120 nm. The analysis of particles was performed by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy techniques. The results indicate successful synthesis of core–shell particles with the magnetic core, which consists of a few agglomerated nick

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Mr., G. D. Kale, P. P. Dhande Ms., and S. S. Tathod Dr. "Study of Magnetic Spinel Ferrite (MFe2O4) Nanoparticles: From Synthesis to Application." International Journal of Advance and Applied Research S6, no. 18 (2025): 870–94. https://doi.org/10.5281/zenodo.15273509.

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<em>This article has discussed the structural characteristics, electrical characteristics, magnetic behavior, synthesis techniques, and applications of the most important soft spinel ferrites. Magnetic ceramics are frequently called ferrites because of the Latin route ferrum. They are divided into two groups: hard (hexaferrites) and soft (garnets and spinels). Among soft ferrites, spinels have garnered special interest in recent decades. Chemically and thermally stable, spinels with the formula AB<sub>2</sub>O<sub>4</sub> can be used in a wide range of applications. The cubic (isometric) cryst

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Gogoi, Bandana, and Upamanyu Das. "Structural, Thermal, and Magnetic Characterization Analysis of Synthesized Fe<sub>3</sub>O<sub>4</sub>-Spinel Ferrite Nanoparticles." Advanced Materials Research 1176 (April 28, 2023): 79–98. http://dx.doi.org/10.4028/p-5bb090.

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Spinel ferrite nanoparticles are potential candidates for multiple biomedical applications. Spinel ferrite nanoparticles have been studied extensively for understanding physical, chemical, electro-optical as well as magnetic properties which are fascinating due to cationic distributions corresponding to tetrahedral sites and octahedral sites in a cubic phase. Biocompatibility and large magnetic moment are basic requirements in spinel ferrite nanoparticles for efficient functioning in specific application purpose. Fe3O4 (magnetite) is an important member of spinel ferrite group with high chemic

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Oviya, K. J., and P. Sivagurunathan. "Structural, Magnetic and Electrochemical Properties of Nickel Manganese Ferrite (NixMn1-xFe2O4) Nanoparticles Prepared via Coprecipitation Method." Asian Journal of Chemistry 36, no. 10 (2024): 2375–84. http://dx.doi.org/10.14233/ajchem.2024.32404.

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In current work, the co-precipitation approach was effectively used to synthesize NixMn1-xFe2O4 nanoparticles. Thermal stability of the nickel manganese ferrite nanoparticle was observed at temperatures above 390 ºC by TG/DTA analysis. XRD investigation revealed the cubic structure of the synthesized NixMn1-xFe2O4 nanoparticles. The average crystallite size of synthesized nanoparticles determined via Scherrer’s equation, increases linearly with calcination temperature and nickel concentration. The FTIR spectra showed the existence of stretching vibrations of metal oxide, which are ascribed to

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Pussi, Katariina, Keying Ding, Bernardo Barbiellini, et al. "Atomic Structure of Mn-Doped CoFe2O4 Nanoparticles for Metal–Air Battery Applications." Condensed Matter 8, no. 2 (2023): 49. http://dx.doi.org/10.3390/condmat8020049.

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We discuss the atomic structure of cobalt ferrite nanoparticles doped with Mn via an analysis based on combining atomic pair distribution functions with high energy X-ray diffraction and high-resolution transmission electron microscopy measurements. Cobalt ferrite nanoparticles are promising materials for metal–air battery applications. Cobalt ferrites, however, generally show poor electronic conductivity at ambient temperatures, which limits their bifunctional catalytic performance in oxygen electrocatalysis. Our study reveals how the introduction of Mn ions promotes the conductivity of the c

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Abd-Elkader, Omar H., Nasrallah M. Deraz, and Lotfi Aleya. "Corchorus Olitorius-Mediated Green Synthesis and Characterization of Nickel and Manganese Ferrite Nanoparticles." Symmetry 15, no. 5 (2023): 965. http://dx.doi.org/10.3390/sym15050965.

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Developing a method for preparing Ni and Mn ferrites was the main objective of this study due to the importance of these materials in high-frequency applications. These ferrites were made by assisting combustion with dried leaves of Corchorus olitorius and then heating them to 700 °C. Several methods, including FTIR, XRD, TEM, and SEM/EDX, were used to characterize these ferrites. The thermal behavior, surface and magnetic properties of the as-prepared materials were determined. The results revealed that the method used is cheap, economical, environmentally friendly and makes it easy to produc

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Blanco-Esqueda, I. G., G. Ortega-Zarzosa, J. R. Martínez, and A. L. Guerrero. "Preparation and Characterization of Nickel Ferrite-SiO2/Ag Core/Shell Nanocomposites." Advances in Materials Science and Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/678739.

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Magnetic composites with silver nanoparticles bonded to their surface were successfully prepared using a simple chemical method. By means of a sol-gel technique, nickel ferrite nanoparticles have been prepared and coated with silica to control and avoid their magnetic agglomeration. The structural and magnetic properties of the nanoparticles were studied in function of the annealing temperature. Then, silver nanoparticles were incorporated by hydrolysis-condensation of tetraethyl orthosilicate, which contains silver nitrate on the surface of the nickel ferrite-SiO2core/shell. Samples were char

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