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Journal articles on the topic 'Nickel ferrite'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Jovalekic, Cedomir, Aleksandar Nikolic, Maja Gruden-Pavlovic, and Miodrag Pavlovic. "Mechanochemical synthesis of stoichiometric nickel and nickel-zinc ferrite powders with Nicolson-Ross analysis of absorption coefficients." Journal of the Serbian Chemical Society 77, no. 4 (2012): 497–505. http://dx.doi.org/10.2298/jsc110302186j.

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The interest in finding new methods for preparation of nickel ferrite (NiFe2O4) and nickel-zinc ferrite (NixZn1-xFe2O4) powders has recently increased, due to the fact that physical and chemical properties of these soft magnetic materials depend strongly on the preparation conditions. In this paper, powder samples of ferrites were obtained by: 1) classic sintering procedure (NixZn1-xFe2O4, x = 0.9) and 2) planetary mill synthesis (both NiFe2O4 and NixZn1-xFe2O4). Mechanochemical reaction leading to the formation of NixZn1-xFe2O4 (x = 1 and 0.9) spinel phase was monitored by SEM, TEM, and XRD.

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2

Lai, Lai Win. "Structural Analysis of Samarium Substitution on Nanocrystalline Nickel Ferrite." Bago University Research Journal Vol.7, No.1, no. 2017 (2017): 143–60. https://doi.org/10.5281/zenodo.3909536.

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Nickel ferrite being one of the most important inverse spinal ferrite has a wide range of applications especially as microwave devices. Rare earth also makes possible the high technology world we live in today. So, Samarium, a rare earth metal, is used as a dopant material with various ratios along with the Nickel ferrite in this research. A series of Samarium substituted Nickel ferrites Ni (Smx Fe1-x)2 O4 with molar ratio (x=0.0000, 0.0125, 0.0250, 0.0375, and 0.0500) have been synthesized by the conventional solid-state reaction method.

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3

Al-Hilli, Muthafer F. "A comparison study of the Structural and magnetic properties of pure Ni metal and NiZnMn ferrite." Iraqi Journal of Physics (IJP) 17, no. 43 (2019): 18–25. http://dx.doi.org/10.30723/ijp.v17i43.418.

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The magnetic properties of a pure Nickel metal and Nickel-Zinc-Manganese ferrites having the chemical formula Ni0.1(Zn0.4Mn0.6)0.9Fe2O4 were studied. The phase formation and crystal structure was studied by using x-ray diffraction which confirmed the formation of pure single spinel cubic phase with space group (Fd3m) in the ferrite. The samples microstructure was studied with scanning electron microstructure and EDX. The magnetic properties of the ferrite and nickel metal were characterized by using a laboratory setup with a magnetic field in the range from 0-500 G. The ferrite showed perfect

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4

Kruželák, Ján, Andrea Kvasničáková, Michaela Džuganová, Lenka Hašková, Rastislav Dosoudil, and Ivan Hudec. "Curing, Properties and EMI Absorption Shielding of Rubber Composites Based on Ferrites and Carbon Fibres." Polymers 15, no. 4 (2023): 857. http://dx.doi.org/10.3390/polym15040857.

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In this work, magnetic soft ferrites, namely manganese–zinc ferrite, nickel–zinc ferrite and combinations of both fillers, were incorporated into acrylonitrile-butadiene rubber to fabricate composite materials. The total content of ferrites was kept constant—300 phr. The second series of composites was fabricated with a similar composition. Moreover, carbon fibres were incorporated into rubber compounds in constant amount—25 phr. The work was focused on investigation of the fillers on absorption shieling performance of the composites, which was investigated within the frequency range 1–6 GHz.

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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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6

Soni, Himanshi, Roberto Acevedo, S. Obad, and Bharat Kumar. "Structural, Magnetic, and Catalytic traits of Nickel Ferrite: A review." E3S Web of Conferences 588 (2024): 02012. http://dx.doi.org/10.1051/e3sconf/202458802012.

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Ferrites are classified as a remarkable category of materials recognized for their extensive range of applications. Within the realm of ferrites, spinel ferrites are considered promising soft magnetic materials, exhibiting exceptional characteristics such as appropriate band gap, significant coercivity, elevated saturation magnetization, and enhanced thermal and electrical traits. Specifically, Nickel ferrites, which are categorized as spinel ferrites, constitute a type of magnetic materials that have attracted significant attention owing to their remarkable traits. This is the highly magnetic

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7

Parajuli, D., and K. Samatha. "Structural and cation distribution analysis of Nickel-Copper/Nickel-Magnesium Substituted Lithium Ferrites." BIBECHANA 21, no. 1 (2024): 74–82. http://dx.doi.org/10.3126/bibechana.v21i1.61270.

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Lithium ferrite (Li0.5Fe2.5O4) shows significant promise in electrical and electronic engineering. It possesses a crystal spinel crystal structure denoted as AB2O4, with "A" and "B" representing specific tetrahedral and octahedral lattice sites respectively. Analysis of X-ray diffraction (XRD) patterns aligns well with the JCPDS card (no. 38-0259), confirming the spinel structure with the Fd3m space group. However, an additional peak at 211 in the basic lithium ferrite suggests a subtle Fd3m to the P4132 phase change with a minor secondary hematite phase. Investigating the cation distribution

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8

Kolhar, Priyanka, Basavaraja Sannakki, Meenakshi Verma, Prabhakar S.V., Mansoor Alshehri, and Nehad Ali Shah. "Synthesis, Characterization and Investigation of Optical and Electrical Properties of Polyaniline/Nickel Ferrite Composites." Nanomaterials 13, no. 15 (2023): 2223. http://dx.doi.org/10.3390/nano13152223.

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Nickel ferrite nanoparticles are prepared by using a low-temperature self-propagating solution combustion method using urea as fuel. The prepared nickel ferrite nanoparticles were doped with polyaniline in the three different weight ratios of 10%, 30% and 50% by using an in situ polymerization method and by adding ammonium persulfate as an oxidizing agent. The obtained samples were characterized by using XRD, FTIR, SEM and a UV–visible spectrophotometer. XRD examined crystalline peaks of ferrites and amorphous peak of polyaniline and confirmed the formation of the composites. FTIR examined the

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9

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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10

Nikolaev, Evgeniy, Elena Nikolaevna Lysenko, Anatoly P. Surzhikov, and Anatoliy I. Kupchishin. "Investigation of Magnetic Phase Formation in Nickel-Zinc Ferrites by X-Ray Diffraction and Thermal Analysis." Materials Science Forum 1064 (June 17, 2022): 99–108. http://dx.doi.org/10.4028/p-gedvv4.

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The magnetic spinel phase formation in Ni1-xZnxFe2O4 (x=0.1, 0.3, 0.5) nickel-zinc ferrite synthesized from mechanically activated NiO-ZnO-Fe2O3 mixture was studied by thermomagnetometry method, X-ray diffraction and saturation magnetization analyses. The initial reagents were activated via milling the mixture in a planetary ball mill at 500 and 1000 rpm. The Ni-Zn ferrites were synthesized at 950 °C for 4 hours using the solid-state technology. The correlation between the results obtained using above methods of testing ferrite was revealed. It was found that the magnetic spinel phase concentr

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11

Walters, I., R. Shende, and J. A. Puszynski. "Hydrogen Production from Thermochemical Water-Splitting Using Ferrites Prepared by Solution Combustion Synthesis." Advances in Science and Technology 91 (October 2014): 32–38. http://dx.doi.org/10.4028/www.scientific.net/ast.91.32.

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Currently, there are several methods to produce spinel ferrite powder material such as sol-gel synthesis, self-propagating high-temperature synthesis (SHS), aerosol spray pyrolysis, and solution combustion synthesis (SCS). These methods have been shown to produce nominally phase pure ferrites for use in hydrogen generation by thermochemical water-splitting. Among these methods, the ferrites derived by SCS have not been fully investigated for hydrogen generation from thermochemical water-splitting. SCS, in general, has several advantages such as it being a simple synthesis that can be done rela

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12

V, Nithya, and B. CHIRSABESAN. "Enhancing removal of pollutants from pharmaceutical wastewater using ferrites in Membrane Bioreactor: A promising technology for environmental sustainability." Asian Journal of Chemistry 35, no. 9 (2023): 2225–31. http://dx.doi.org/10.14233/ajchem.2023.28101.

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Industrial wastewater contains various toxic and hazardous pollutants that require effective treatment to meet environmental regulations. In recent years, silver-doped ferrites have gained attention as promising materials for the treatment of industrial wastewater in membrane bioreactor (MBR). In this abstract, we will discuss the potential of silver-doped nickel ferrite (AgNiFe2O4) and silver-doped potassium ferrite (AgKFe2O4) was synthesized by sol-gel technique for the removal of pollutants from industrial wastewater. AgNiFe2O4 and AgKFe2O4 nanoparticles have been found to be effective for

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13

Nabila, Roida, Riski Agung Nata Utama, W. Widiyastuti, Tantular Nurtono, and Heru Setyawan. "Preparation and Characterization of Nickel Ferrite (NiFe<sub>2</sub>O<sub>4</sub>) Nanoparticles by Surfactant-Free Electrochemical Method." Nano Hybrids and Composites 44 (June 26, 2024): 1–8. http://dx.doi.org/10.4028/p-jew9ry.

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Nickel ferrite (NiFe2O4) Nanoparticles have been synthesized by a simple surfactant-free electrochemical method at room temperature using iron plates as the cathode and anode electrode. nickel sulfate hexahydrate solution used as the electrolyte has a concentration of 0.04 M and pH 10. The voltage applied varied from 6, 9, and 12 V. We found that voltage and hydroxyl ions (OH-) presence have an important role in the formation of nickel ferrite nanoparticles. Particle size can be controlled by voltage. Nickel ferrite nanoparticles were produced in the form of gray powder and exhibited ferromagn

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14

Lesik, Serhii, and Iryna Ivanenko. "Composite NiFe₂O₄ Catalyst for Sodium Borohydride Hydrolysis." ECS Transactions 107, no. 1 (2022): 15433–37. http://dx.doi.org/10.1149/10701.15433ecst.

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Nickel ferrites composite catalysts with the spinel structure were synthesized by the coprecipitation method. Nickel ferrites were deposed on the surface of industrial active carbon. The temperature of final calcination in inert media was 400, 500, and 600°C. The trevorite phase was determined by XR-diffraction; the ratio of Ni to Fe was checked by luminescent analysis, it consisted ~0.61. Crystallites sizes varied in the range from 218 to 252 nm and decreased with an increase in the calcination temperature. It was found that the rate of hydrogen evolution in the reaction of sodium borohydride

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15

Kareem, Shaima'a J., Mohammed Naji Al-Aaraji, and Amany Hatem. "Investigation of Microstructure and Physical Properties of Nickel Ferrites, Synthesized via Sol-Gel Method." Solid State Phenomena 341 (March 15, 2023): 57–64. http://dx.doi.org/10.4028/p-88v98w.

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In this paper, studying synthesis and characterization of ferrospinel nickel ferrite. Nickel ferrite is prepared by using the sol-gel method, with a ratio of 2:1 of iron nitrate to nickel nitrate. First the starting material is dissolved in 100 ml of ethylene glycol solution to get the gel and then the gel was dried at 160°C then calcined at 600°C to obtain fine powder, second the nickel ferrite powder is pressed and sintered at 1200°C. To characterize nickel ferrite are used different techniques, such as: XRD is shown high purity, the purity of the nickel ferrite is known and the extent to wh

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16

Bushkova, V. S. "Optical Properties of Ferrite Powders of NixCo1-xFe2O4 System." Фізика і хімія твердого тіла 16, no. 3 (2015): 506–10. http://dx.doi.org/10.15330/pcss.16.3.506-510.

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The aim of this work was to create and study of ferrite nickel-cobalt powders, using sol-gel technology with participation of auto-combustion. It is studied the optical properties of the powders depending on the degree of substitution of cobalt cations on nickel cations. As a result of analysis of the absorption spectra is revealed that for all investigated powders inherent allowed direct transition of electrons from the valence band to the conduction band. It was shown that the optical band gap increases with increasing concentration of nickel cations in the composition of ferrites.

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17

Rahma, Sifa Aulia, and Asep Bayu Dani Nandiyanto. "Analisis Bibliometrik: Penggunaan Aplikasi VOSViewer Terhadap Perkembangan Publikasi Riset Nanopartikel Nikel Ferit (NiFe2O4)." JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) 6, no. 2 (2024): 41–51. https://doi.org/10.36378/jedchem.v6i2.3634.

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Nickel ferrite (NiFe2O4) nanoparticles are soft ferrite materials. The development of publications on this research can be identified through bibliometric studies using the VOSviewer application and metadata from Google Scholar obtained using the Publish or Perish software. Keyword searches for “nickel ferrite”, “synthesis”, “nanoparticle” and “nickel ferrite nanoparticle” yielded 126, 125, 117, and 108 links, respectively. Research grew rapidly from 2012 to 2021, peaking in 2021 with 168 articles but declining in 2022. The results of this bibliometric mapping are expected to serve as a refere

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18

Abdullahi, Umma. "Effects of Alloying Element and Heat Treatment on Mechanical Properties of Alloy Steels." International Journal of Engineering Materials and Manufacture 8, no. 3 (2023): 67–74. http://dx.doi.org/10.26776/ijemm.08.03.2023.02.

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The effects of Cr and Ni on three different types of steel with different carbon ratios under constant conditions such as the welding current 120A, voltage 80V, Diameter 10 mm and angle 60 degree was observed. Nickel percentage of up to 0.147% and Chromium 0.083% contributed to affecting the mechanical properties of the steel. Undissolved carbide particles refine the austenite grain size. In the presence of nickel, chromium carbide is less effective in austenite grain refinement than chromium carbide in absence of nickel at temperature below 975°C. Nickel does not produce any austenite grain r

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19

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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20

Tangcharoen, Thanit, Anucha Ruangphanit, Wantana Klysubun, and Wisanu Pecharapa. "Sol-gel Combustion Synthesis and Characterizations of Nanocrystalline Zinc, Nickel and Nickel-Zinc Ferrites." Advanced Materials Research 802 (September 2013): 64–68. http://dx.doi.org/10.4028/www.scientific.net/amr.802.64.

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In this work, X-ray diffraction (XRD), Raman spectroscopy (RAMAN) and vibrating sample magnetometer (VSM) measurements were employed to investigate the crystal structure, chemical bonding and magnetic properties of the nanocrystalline Zinc, Nickel and Nickel-Zinc ferrites (ZnFe2O4, NiFe2O4 and Ni0.5Zn0.5Fe2O4) which were synthesized by sol-gel combustion method. Moreover, the composition of elements and the electronic structure including the cation distribution for all ferrite samples were examined through synchrotron X-ray fluorescence (XRF) and X-ray absorption near-edge structure (XANES) sp

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21

Al-Rubaiey, Najem A., Mohammed G. Albrazanjy, Wafaa A. Kadhim, Hassan D. Mohammed, and Mohd Hasbi Ab Rahim. "The Potential of Using Zn_0.6Ni_0.4Fe₂O₄ Nanoparticles as Corrosion Inhibitor for Carbon Steel in Oil Environment." Materials Science Forum 1021 (February 2021): 335–43. http://dx.doi.org/10.4028/www.scientific.net/msf.1021.335.

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Corrosion is one of the serious problems in oil and gas industry. So far, many inhibitors have been used to control or reduce corrosion. Nowadays, nano-materials have been employed as inhibitors as well due to their excellent properties such as high surface area, excellent inhibition efficiency, low cost, and minimum toxicity. In the current work, nano-ferrite materials have been used as inhibitors to reduce the corrosion of carbon steel in oil environment (crude oil obtained from Iraqi Majnoon oil field). The anti-corrosion properties of the nickel and zinc ferrite on carbon steel in Iraqi oi

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22

Ammani Ammal, V. Beula Shanthi, and N. John Jebarathinam. "Fluid Hyperthermia and Ultrasonic Studies on Nickel Ferrite Magnetic Nanoparticles." Asian Journal of Chemistry 35, no. 6 (2023): 1449–57. http://dx.doi.org/10.14233/ajchem.2023.27577.

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Superparamagnetic nickel ferrite (NiFe2O4) nanoparticles were synthesized by low temperature hydrothermal method using EDTA as templating agent. The synthesized nanoparticles were characterized by FTIR, XRD, FESEM and TEM analysis. The XRD analysis shows the presence of cubic spinel phase with crystallite size of 26.42 nm. The morphology analyzed by FESEM and TEM techniques indicate the presence of cubical shape particles having average particle size of 28.44 nm with no agglomeration. The VSM analysis gives “S” shape curve with zero coercivity and saturation magnetization (Ms) of 30 emu/g indi

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23

Li, Jing Jing, Yun Zhao, Han Sheng Li, Qin Wu, and Qing Ze Jiao. "Preparation of Hollow Nickel Ferrite Microspheres and their Magnetic Properties." Advanced Materials Research 1035 (October 2014): 488–91. http://dx.doi.org/10.4028/www.scientific.net/amr.1035.488.

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Hollow nickel ferrite microspheres with a diameter of about 1.5 to 2.5 μm were synthesized using an emulsion-based solvothermal method in combination with calcination at 550°C. The structures and morphologies of the nickel ferrite microspheres were characterized using an X-ray diffractometer, a transmission electron microscopy and a field emission scanning electron microscopy. Magnetization measurement was carried out using a vibrating sample magnetometer at room temperature. The saturation magnetization and coercivity of nickel ferrite microspheres could reach 19.41 emu/g and 202.28 Oe, respe

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24

Peni, K. Samsuria Mutalib. "Semiconductor Cobalt Ferrite Extracted from Various Leaves, Plays as Transposon Bullet, are Frequently Utilized in Magnetic-Based Drug Delivery: A Green Synthesis Methods of Spinel Ferrite." International Journal of Engineering Research & Science 9, no. 7 (2023): 09–17. https://doi.org/10.5281/zenodo.8198430.

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<strong>Abstract</strong><strong>—</strong> Green Synthesis methods of cobalt ferrite (CoF) and spinel ferrite from many leaves and fruit peels is not only a next-generation (NG) raw material of pharma manufacture, but also better well-being, and in all parts quality of life. B20/G20 negotiation transaction is a now market share of pharma economic besides for diagnosis/ energy/ capacitor/ battery nickel ferrite based on semiconductor. SWCNT, DWCNT, and MWCNT is a capacitors, and semiconductors (supercapacitors and superconductors) are bioelectric power matter. Knowing our potential and h

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25

Lingamdinne, Lakshmi Prasanna, Yu-Lim Choi, Im-Soon Kim, Yoon-Young Chang, Janardhan Reddy Koduru, and Jae-Kyu Yang. "Porous graphene oxide based inverse spinel nickel ferrite nanocomposites for the enhanced adsorption removal of arsenic." RSC Advances 6, no. 77 (2016): 73776–89. http://dx.doi.org/10.1039/c6ra10134h.

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Porous nanocomposites, graphene oxide based-inverse spinel nickel ferrite (GONF) and reduced graphene oxide based-inverse spinel nickel ferrite (rGONF), were prepared by co-precipitation of graphene oxide (GO) with nickel and iron salts at one pot.

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26

Bepari, Md Mohar Ali, and Mohiuddin Ahmed. "Effect of Chromium and Nickel Additions on the Transformation Characteristic and Ferrite Grain Size Refinement of Low Carbon Structural Steels Containing 0.13% C." Applied Mechanics and Materials 860 (December 2016): 158–64. http://dx.doi.org/10.4028/www.scientific.net/amm.860.158.

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The effect of small addition of chromium and nickel alone or in combination on the transformation characteristic and ferrite grain size of low carbon (0.13%C) structural steels have been studied by cooling suitable steels at four different cooling rates ranging from 120°C/min to 3.6° C/min from temperatures giving a constant austenite grain size of 37 μm. Radio Frequency generator with control system was used for the heat treatment of the steel samples. Optical microscopy of the heat treated samples was carried out. Ferrite grain size was determined from the fictitious ferrite grain size measu

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27

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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28

Wu, Chun Du, Kun Zheng, and Qing Jie Xie. "The Primary Study of Synthesis and Photocatalytic Activity of ZnO/Nickel-Zinc Ferrite Magnetic Photocatalyst." Advanced Materials Research 955-959 (June 2014): 154–57. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.154.

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Magnetic photocatalyst ZnO/nickel-zinc ferrite powders were synthesized by two-step method: First ,nickel-zinc ferrite powders were prepared by coprecipitation method and then ZnO /nickel-zinc ferrite composite powders were prepared by the homogeneous precipitation method. The as-prepared sample was characterized by X-ray Diffraction (XRD), and Transmission Electron Microscopy (TEM), the photocatalysis of the catalyst was evaluated with methylene blue as decomposition substance and the photocatalytic activity of the material has been tested on decomposable substrate under visible-light in the

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29

Rák, Zs, and D. W. Brenner. "Negative Surface Energies of Nickel Ferrite Nanoparticles under Hydrothermal Conditions." Journal of Nanomaterials 2019 (October 7, 2019): 1–6. http://dx.doi.org/10.1155/2019/5268415.

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The formation of nickel ferrite (NiFe2O4) nanoparticles under hydrothermal conditions has been modeled using a method that combines results of first-principle calculations, elements of aqueous thermochemistry, and experimental free energies of formation. The calculations predict negative formation energies for the (111) surfaces and positive free energies for the formation of bulk nickel ferrite. Based on classical nucleation theory, the combination of the negative surface and positive bulk energies yields thermodynamically stable nickel ferrite nanoparticles with sizes between 30 and 150 nm i

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30

Gopale, Sanjay, M. R. Patil, R. M. Borade, J. M. Bhandari, and K. M. Jadhav. "Synthesis, Characterizations and Magnetic Properties of Ce-Al Co-Doped Nickel Ferrite Nanoparticles." Advanced Materials Research 1169 (March 18, 2022): 79–85. http://dx.doi.org/10.4028/p-95jpl8.

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Here, we report the synthesis, characterizations and magnetic properties of Ce-Al co-doped nickel ferrite. The samples of pure nickel ferrite ( NiFe2O4 ) and Ce-Al doped nickel ferrite (NiFe1.96Ce0.02Al0.02O4 ) were prepared in nanocrystalline form using sol-gel auto combustion method. X-ray diffraction technique was employed to know the phase purity and for the determination of structural properties. Examination of XRD pattern shows the presence of those reflections which belongs to cubic spinel structure indicating the formation of single phase cubic spinel structure. The lattice constant, X

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31

Sarkar, Kakali, Soumya Mukherjee, and Siddhartha Mukherjee. "Structural, electrical and magnetic behaviour of undoped and nickel doped nanocrystalline bismuth ferrite by solution combustion route." Processing and Application of Ceramics 9, no. 1 (2015): 53–60. http://dx.doi.org/10.2298/pac1501053s.

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Multiferroic bismuth ferrite (BFO) and Ni-doped bismuth ferrites, with perovskite structure, were synthesized by chemical route at the temperatures ranging from 500 to 600 ?C in controlled atmosphere. The structural phase analysis of materials was identified by XRD and crystallite size was calculated from the half width measurement of the well defined major XRD diffraction peak. Average crystallite size was calculated by applying Scherrer?s formula and found to have values in the range from 14 to 35 nm. FESEM was used to evaluate the morphology and structural formation of nanocrystallite grain

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32

Janudin, Nurjahirah, Noor Azilah Mohd Kasim, Victor Feizal Knight, et al. "Fabrication of a Nickel Ferrite/Nanocellulose-Based Nanocomposite as an Active Sensing Material for the Detection of Chlorine Gas." Polymers 14, no. 9 (2022): 1906. http://dx.doi.org/10.3390/polym14091906.

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Chlorine gas is extensively utilised in industries as both a disinfectant and for wastewater treatment. It has a pungent and irritating odour that is comparable with that of bleach and can cause serious health issues such as headaches and breathing difficulties. Hence, efficiently, and accurately monitoring chlorine gas is critical to ensure that no undesirable incidents occur. Due to its remarkable characteristics, numerous researchers have explored the potential of ferrite nanoparticles as a sensing material for chlorine gas detection. Among several ferrite nanoparticles, nickel ferrite (NiF

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Ušáková, Mariana, Elemír Ušák, Martin Šoka, and Ján Lokaj. "The influence of selected ions on various characteristics of Nickel-Zinc ferrites." Journal of Electrical Engineering 69, no. 6 (2018): 449–53. http://dx.doi.org/10.2478/jee-2018-0072.

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Abstract One of acknowledged methods remarkably improving structural, magnetic and electrical properties of spinel ferrite systems is the substitution of iron ions by some trivalent ions. In the family of spinel ferrites, thanks to its high saturation magnetization and electrical resistivity as well as low losses, the nickel-zinc ferrite is a very important magnetic material used in many applications in electrical engineering and electronics. The properties of these materials are in general dependent upon chemical composition, method of preparation, stoichiometry, sintering time, temperature a

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Peelamedu, Ramesh, Craig Grimes, Dinesh Agrawal, Rustum Roy, and Purushotham Yadoji. "Ultralow dielectric constant nickel–zinc ferrites using microwave sintering." Journal of Materials Research 18, no. 10 (2003): 2292–95. http://dx.doi.org/10.1557/jmr.2003.0320.

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Ultralow dielectric constant values were measured on Ni–Zn ferrites prepared using Fe2O3 as a starting material and sintered in a microwave field. Significant differences in microstructure, magnetic, and dielectric properties were observed between microwave-sintered Ni–Zn ferrites prepared using Fe3O4 (T34) and those starting with Fe2O3 (T23) ingredients. Higher magnetization values observed in T23 ferrite are attributed to large grain size, possibly containing abundant domain walls and the presence of fewer Fe2+ ions. The ultralow dielectric constant values observed on T23 ferrites show that

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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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Kotwal, Pinky, Rohit Jasrotia, Himanshi, et al. "A Review on the Synthesis, Properties and Multifunctional Applications of Transition and Rare-Earth Doped Nickel Spinel Ferrite." E3S Web of Conferences 509 (2024): 01011. http://dx.doi.org/10.1051/e3sconf/202450901011.

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Nickel ferrite have gathered a lot of research interest nowadays, because of their unique magnetic and structural traits, which makes appealing for a variety of scientific applications. In recent years, considerable attention has been placed towards the impact of rare-earth and transition elements doping on the magnetic as well as the structural traits of nickel spinel ferrite. This study delivers a concise summary of scientific advancements in this area. It discusses the processes used for fabricating doped nickel spinel ferrite, the influence of different dopants on the material's magnetic a

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VYAS, SHUBANG, NEHA GODHA, RAKSHIT AMETA, and SURESH C. AMETA. "USE OF SOME METAL FERRITES IN THE REDUCTION OF 2,4,6- TRINITROPHENOL." Pollution Research 42, no. 01 (2023): 66–71. http://dx.doi.org/10.53550/pr.2023.v42i01.011.

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The noble-metal Nanocatalyst are widely used, but ferrite-based magnetic catalyst are rarely used. The magnetic copper ferrite, CuFe2 O4 catalyst was synthesized by hydrothermal method and used to reduce 2,4,6-trinitrophenol in presence of sodium borohydride. The copper ferrite was analysed by X-ray diffraction spectroscopy (XRD), Energy-dispersive X-ray spectroscopy (EDX), Scanning Electron Microscopy (SEM) and Fourier transform infrared (FTIR). The reduction of 2,4,6- trinitrophenol was observed in presence of copper ferrite as catalyst and sodium borohydride as the reductant. The conversion

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Муслимов, А. Э., А. В. Буташин та В. М. Каневский. "Влияние напряжений на магнитные свойства пленок NiFe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- и CoFe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- на сапфире". Письма в журнал технической физики 44, № 16 (2018): 57. http://dx.doi.org/10.21883/pjtf.2018.16.46477.17370.

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AbstractWe have studied the influence of mechanical stresses on the magnetic properties of nickel ferrite (NiFev) and cobalt ferrite (CoFe_2O_4) films deposited on sapphire substrates with a - and c -oriented step terrace nanostructures. It is established that compressive stresses favor enhancement of the coercive field in thin ferrite films in the strain direction. Films of magnetically soft nickel ferrite with a room-temperature coercive field of 32.5 mT were obtained.

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Gu, Jian Jun, Li Hu Liu, Yun Kai Qi, Qin Xu, and Hui Yuan Sun. "Synthesis and Magnetic Characterization of Nickel Ferrite Nanowire Arrays Doped with Manganese." Advanced Materials Research 233-235 (May 2011): 1799–802. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.1799.

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The spinel ferrite system Ni1-xMnxFe2O4 (x = 0.0, 0.25, 0.5, 0.75) nanowire arrays with an average diameter of about 80 nm, have been synthesized into nanopores of anodic aluminum oxide (AAO) template using the sol–gel technique. X-ray diffraction analysis shows the formation of single-phase nickel manganese ferrites. Scanning electron microscopy and transmission electron microscope images indicate that the nanowire arrays are composed of prolate spheroids with different crystal orientations. Magnetic measurements show that the saturation magnetization (Ms) of nickel ferrite nanowire arrays is

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Li, Ming Wei, Cui Ping Liu, and Xiao Mei Gao. "Nickel Ferrite Nanocrystallites Synthesized by Sol-Gel and Coprecipitation Methods: A Comparative Study." Advanced Materials Research 79-82 (August 2009): 305–8. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.305.

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The microstructures and magnetic properties of nickel ferrite synthesized by coprecipitation and sol–gel methods are comparatively studied. The coprecipitation-derived samples have Fe/Ni ratios differing from their raw materials because of the precipitation washing process. The stoichiometric metal cations (Fe/Ni=2.0) in the xerogel facilitated the nucleation and growth of nickel ferrite nanocrystallites at lower calcination temperature in sol–gel method. The samples consist of nickel ferrite nanocrystallites, and have superparamagnetic properties at room temperature.

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Liu, Ran, Zhenguo An, Bin Liao, and Jingjie Zhang. "FeNi alloy and nickel ferrite codoped carbon hollow microspheres for high-efficiency microwave absorption." Journal of Materials Chemistry C 10, no. 15 (2022): 6085–97. http://dx.doi.org/10.1039/d2tc00135g.

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Carbon–FeNi alloy–nickel ferrite hollow microspheres with FeNi alloy and nickel ferrite nanoparticle codoped carbon shell were constructed. The products present excellent microwave absorption performance related to the processing condition.

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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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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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Abdelwahab, Abdalla, Francisco Carrasco-Marín, and Agustín F. Pérez-Cadenas. "Carbon Xerogels Hydrothermally Doped with Bimetal Oxides for Oxygen Reduction Reaction." Materials 12, no. 15 (2019): 2446. http://dx.doi.org/10.3390/ma12152446.

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A total of two carbon xerogels doped with cobalt and nickel were prepared by the sol–gel method. The obtained carbon xerogels underwent further surface modification with three binary metal oxides namely: nickel cobaltite, nickel ferrite, and cobalt ferrite through the hydrothermal method. The mesopore volumes of these materials ranged between 0.24 and 0.40 cm3/g. Moreover, there was a morphology transformation for the carbon xerogels doped with nickel cobaltite, which is in the form of nano-needles after the hydrothermal process. Whereas the carbon xerogels doped with nickel ferrite and cobalt

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Wang, Yan, Ying Huang, and Qiu Fen Wang. "The Preparation and Electromagnetic Properties of Nickel-Zinc Ferrite Thin Films." Advanced Materials Research 287-290 (July 2011): 2294–97. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2294.

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Compared polyvinyl alcohol with citric acid as complexing agent, nanocrystalline nickel-zinc ferrite thin films were prepared by sol-gel method and dip-coating process under different temperature. The phase composition, morphology, magnetic properties and electromagnetic properties of nanocrystalline nickel-zinc ferrite thin films were studied by X-ray diffractometer (XRD), field emission scanning electron microscope (FESEM), vibrating sample magnetometer (VSM) and vector network analyzer. The results show polyvinyl alcohol is the proper complexing agent for the preparation of nanocrystalline

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Kolekar, Ravikumar, Suresh Baburao Kapatkar, and Shridhar Narasinhmurthy Mathad. "Synthesis and Characterization of Co0.8-x Nix Zn0.2 Fe2O4 Ferrites by Williamson–Hall and Size–Strain Plot Methods." Acta Chemica Iasi 27, no. 1 (2019): 73–86. http://dx.doi.org/10.2478/achi-2019-0006.

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Abstract The Co-Zn ferrite (x=0.00) and Nickel doped Co-Zn ferrites (x=0.24) was synthesized by low cost solid state reaction method and characterized by XRD technique. The X-ray diffraction results for the samples showed the formation of single phase cubic spinel. The lattice constant and particle size for Co-Zn ferrite(x=0.00) is found to be 8.3465 Å and 26.72 nm and for Nickel doped (x=0.24) it is 8.3440 Å and 24.21nm. Micro strain (ε), Dislocation density(ρD), Hopping lengths (LA and LB), Bond lengths (A - O and B-O), Ionic radii (rA and rB), Texture coefficients (Thkl) and Standard deviat

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Nemkova, D. I., S. V. Saikova, A. E. Krolikov, E. V. Pikurova, and A. S. Samoilo. "Optimisation of nickel ferrite production conditions for the preparation of magnetic composite photocatalysts." Журнал неорганической химии 69, no. 2 (2024): 258–67. http://dx.doi.org/10.31857/s0044457x24020135.

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Ferrites of non-ferrous metals are promising magnetic catalysts that can be easily separated from the reaction mixture after use by applying a magnetic field. However, these materials have a fast electron-hole relaxation time, which reduces their activity in photoreactions. This problem is overcome by creating hybrid nanostructures based on ferrites, for example with zinc oxides. The catalytic activity of such structures depends highly on the method of their synthesis. In this work, the alkaline co-precipitation of Fe2+ and Ni2+ ions, which have similar values for hydroxides, was used to obtai

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Sandar, Oo, Wint Tun Ye, and Zin Oo Shwe. "Porosity and the Magnetic Properties of Aluminium Doped Nickel Ferrite." International Journal of Trend in Scientific Research and Development 3, no. 5 (2019): 79–86. https://doi.org/10.5281/zenodo.3589617.

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The nanocrystalline particles of Aluminium Al doped nickel Ni ferrites with general formula NiAlxFe2 xO4 x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were synthesized by sol gel auto combustion technique. The formation of single phase cubic spinel was confirmed by X ray diffraction analyses. Morphological features of the samples are studied by Scanning Electron Microscopy SEM to examine the particle size, shape and homogeneity of sample. The magnetic hysteresis graphs were obtained to understand their magnetic behaviours. The relative permeability µr of Al-Ni ferrite samples shows a decrease for

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Astafyev, Alexandr, Evgeniy Nikolaev, Elena Lysenko, and Anatoly P. Surzhikov. "X-Ray and Thermogravimetric Analyzes of Mechanically Activated Nickel Ferrites." Materials Science Forum 970 (September 2019): 17–23. http://dx.doi.org/10.4028/www.scientific.net/msf.970.17.

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This article shows a study of the effect of mechanical activation of the initial mixture of reagents NiO and Fe2O3 at different speeds of grinding bowl rotation on synthesis of nickel ferrite. Nickel ferrite was produced by the solid-phase synthesis at a temperature of 900 °C for 240 minutes. The obtained ferrite samples were investigated by thermal gravimetric and X-ray phase analysis. The Curie temperature values are obtained, as well as the magnitude of the change of detected instrument weight at the magnetic phase transition (ferromagnetic-paramagnetic) of nickel ferrite using thermal grav

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Randhawa, B. S., and R. Singh. "Preparation of Nickel Ferrite from thermolysis of Nickel Hexa(Formato)-Ferrate(III)Hexahydrate." Le Journal de Physique IV 07, no. C1 (1997): C1–89—C1–90. http://dx.doi.org/10.1051/jp4:1997125.

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