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Journal articles on the topic 'Superparamagnetics'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Paramasivan, P., and P. Venkatesh. "A Novel Approach: Hydrothermal Method of Fine Stabilized Superparamagnetics of Cobalt Ferrite (CoFe2O4) Nanoparticles." Journal of Superconductivity and Novel Magnetism 29, no. 11 (2016): 2805–11. http://dx.doi.org/10.1007/s10948-016-3586-z.

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Zhu, Xiaobing, Yi Zhang, Jian Ye, and Lei Wang. "A Method for Preparing Superparamagnetic Nanomaterial." Journal of Physics: Conference Series 2500, no. 1 (2023): 012009. http://dx.doi.org/10.1088/1742-6596/2500/1/012009.

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Abstract Substances with superparamagnetism, a special magnetic effect, are magnetized under external magnetic field. When the applied magnetic field disappears, superparamagnetic substances have almost zero magnetization intensity, with quite small coercivity. The performance of magnetic powder or magnetic suspension used in magnetic particle detection greatly affects detection sensitivity. This paper studies a new method for preparing nano-superparamagnetic non-destructive testing materials by combing membrane technology and chemical co-precipitation method. Magnetic nano-ferroferric oxide p

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Kostrobij, P. P., F. O. Ivashchyshyn, B. M. Markovych, and M. V. Tokarchuk. "Microscopic theory of the influence of dipole superparamagnetics (type >) on current flow in semiconductor layered structures (type GaSe, InSe)." Mathematical Modeling and Computing 8, no. 1 (2020): 89–105. http://dx.doi.org/10.23939/mmc2021.01.089.

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A statistical approach to description of the charge carrier transfer processes in hybrid nanostructures taking into account electromagnetic fields is proposed using the method of the nonequilibrium statistical operator Zubarev. Generalized transfer equations are obtained, which describe non-Markov processes of charge transfer in the system taking into account magnetic and polarization processes under the influence of external and induced internal electromagnetic fields. Weakly nonequilibrium charge transfer processes in nanostructures are considered, and a nonequilibrium statistical operator i

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Satyam Naidu, K., and Nowduri Annapurna. "Synthesis, characterization and magnetic properties of iron oxide nanoparticles from reverse chemical co-precipitation method." Journal of Physics: Conference Series 2765, no. 1 (2024): 012024. http://dx.doi.org/10.1088/1742-6596/2765/1/012024.

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Abstract Studying magnetic characteristics of iron oxide nanoparticles was highlighted as a key step in creating potential powder nanomaterials. The occurrence of electron spins parallel to the crystallographic orientations and single domain nanopartilces are the recognized causes of superparamagnetism in bulk magnetite. Nanoparticles whose size could be tuned exhibit this superparamagnetism effect. The reverse co-precipitation process is used to create the current magnetite nanoparticles. The iron oxide nanoparticles were synthesized by reverse chemical coprecipitation method and were confirm

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Li, Dan Dan, Xiao Yan Li, Xing Huang, Yu Xiang Wang, and Ya Juan Zhao. "Synthesis and Characterization of a Kind of Superparamagnetic Material." Advanced Materials Research 239-242 (May 2011): 806–9. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.806.

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A new superparamagnetic material was synthesized by a method involving the use of dimethylolpropionic acid (DMPA) and ferrous powder in N,N-dimethylformamide (DMF) as a solvent in this work. Through the magnetic balance measurements, fourier transform infrared spectrophotometry (FTIR) and so on, it was found that the synthesized material emerged superparamagnetism at room temperature. Additionally, there was a regular change for the magnetic response behavior with different temperature and time in some way.

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Galvão, Wesley S., Davino M. A. Neto, Rafael M. Freire, and P. B. A. Fechine. "Super-Paramagnetic Nanoparticles with Spinel Structure: A Review of Synthesis and Biomedical Applications." Solid State Phenomena 241 (October 2015): 139–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.241.139.

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The study of ceramic materials has attracted the attention of many researchers due to the possibility of their use in nanotechnology. The spinel ferrites form a large group of materials with a broad range of applications. Some examples include electronic devices such as high-frequency transformer cores, antenna rods, induction-tuners, among many others. However, when the ferritic materials display superparamagnetic behavior, their potential for biological applications like drug delivery, hyperthermia, resonance magnetic imaging and magnetic separation, become amazingly high. Therefore, the sup

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Tian, Ruizhi, Zhihong Liu, Youming Chen, Xun Wang, Hancheng Zhou, and Shousen Wang. "Mechanism of polyethylene glycol and polyethylenimine combined with superparamagnetic nanoparticles in treating the brain glioma." Materials Express 13, no. 7 (2023): 1138–45. http://dx.doi.org/10.1166/mex.2023.2449.

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This study assessed the mechanism of polyethylene glycol (PEG) and polyethylenimine (PEI) combined with superparamagnetic nanoparticles in treating brain glioma. Forty-eight male Stromal Derived Factor (SDF) grade Sprague Dawley (SD) rats were divided into control set, doxorubicin (DOX) set, set of DOX and Spions Medicine (SPIONs) and set of DOX, SPIONs and magnet followed by analysis of change of tumor volume, MRI imaging, HE staining, trypan-blue staining, and TUNEL staining. The dispersion of DOX-SPIONs nanoparticles was uniform. The form was circular. The average diameter was 15.4 nm. The

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Shiratsuchi, Yu, Yasushi Endo, and Masahiko Yamamoto. "Magnetism of Ultrathin Fe Films in the Vicinity of Transition from Ferromagnetism to Superparamagnetism." Materials Science Forum 512 (April 2006): 165–70. http://dx.doi.org/10.4028/www.scientific.net/msf.512.165.

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We have investigated the magnetism of ultrathin Fe films grown on the inclined Al2O3(0001), especially, in the vicinity of ferromagnetic-superparamagnetic transition. In the transition region, the magnetic state of Fe films is the coexistence of ferromagnetism and superparamagnetism. The ratio of the components in ferromagnetic and superparamagnetic state is dependent on the growth temperature. For Fe grown on the flat substrate without the inclination, as the growth temperature increases, the ratio of the component in ferromagnetic state increases, reaches to the maximum and decreases again.

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Zhu, Aiping, Xiadan Luo, and Sheng Dai. "Chitosan-poly(acrylic acid) complex modified paramagnetic Fe3O4 nanoparticles for camptothecin loading and release." Journal of Materials Research 24, no. 7 (2009): 2307–15. http://dx.doi.org/10.1557/jmr.2009.0284.

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The stable superparamagnetic colloidal suspension of chitosan-poly(acrylic acid) (CS-PAA)/Fe3O4 nanoparticles was synthesized by graft copolymerization AA on the surface of CS stabilized Fe3O4 nanoparticles. The size, size distribution, structure, and magnetic properties of the resultant CS-PAA/Fe3O4 nanoparticles were characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscope (TEM), dynamic light scattering, Fourier transform infrared spectroscopy, x-ray diffraction, and vibrating sample magnetometry (VSM). FE-SEM and TEM showed the spherelike morp

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Owliaie, H. R., R. J. Heck, and A. Abtahi. "The magnetic susceptibility of soils in Kohgilouye, Iran." Canadian Journal of Soil Science 86, no. 1 (2006): 97–107. http://dx.doi.org/10.4141/s05-003.

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Soil magnetic susceptibility (MS) and Fe were examined for several soils on calcareous parent material, reflecting key climatic conditions and drainage classes in southwestern Iran (Kohgilouye Province). Alfisols, in the eastern and northern parts, contained more pedogenic (citrate dithionite extractable) Fe (up to 60 g kg-1 on a minerogenic basis; 70 % of total Fe, as determined by lithium tetraborate fusion) and poorly crystalline Fe (up to 6 g kg-1 ammonium oxalate extractable) than the Inceptisols in the southern parts. Soil MS (χlf) ranged from 5 to 120 × 10–8 m3 kg-1, with A horizons exh

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Ghafel, Aqeel, and Hadey K. Mohamad. "Super paramagnetism phenomenon for a mixed spin ferrimagnetic binary system." University of Thi-Qar Journal of Science 11, no. 1 (2024): 55–62. http://dx.doi.org/10.32792/utq/utjsci/v11i1.1170.

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A decorated ferrimagnetic mixed triangular system was studied using the molecular mean-field approximation. The outcomes of the investigation were examined using the Blume-Capel Ising model. The study paper investigates the influence of crystal and external magnetic fields on ferrimagnetic devices decorated with mixed spin-2 and spin-7/2 of a triangular lattice. It is noteworthy that spin-2 ions are located at the nodal points, whereas six additional spin-7/2 ions surround the proposed lattice. Altering the exchange interactions through the specific crystal and external magnetic fields induces

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Sun, De Hui, De Xin Sun, and Yu Hao. "Synthesis and Characterization of Superparamagnetic NiFe₂O₄ Nanoparticles." Materials Science Forum 663-665 (November 2010): 1325–28. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.1325.

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The superparamagnetic NiFe2O4 nanoparticles were synthesized using a hydrothermal technology through P123 sphere micelles as ‘nanoreactor’ in this work. Their morphologies, structures, surface properties and magnetism were characterized by FE-SEM, XRD, FTIR, and VSM, respectively. The nickel ferrite samples are nearly spherical and homogeneous nanoparticles with average size range of about 50-120 nm. They possess superparamagnetism at room temperature and higher saturation magnetization. X-ray diffraction (XRD) pattern confirms that the samples belong to the cubic crystal system with an invers

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Patel, Daksha, Yongmin Chang, Tae Jeong Kim, Myung-Hwa Jung, and Gang Ho Lee. "Synthesis and Characterization of Fe3O4-CdX (X = S, Se) Core–Shell Nanoparticles." Journal of Nanoscience and Nanotechnology 8, no. 9 (2008): 4826–29. http://dx.doi.org/10.1166/jnn.2008.ic19.

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We report a facile one-pot synthesis of Fe3O4-CdX (X = S, Se) core–shell nanoparticles and characterized them with XRD, TEM, squid magnetometer, and UV-visible absorption and PL spectrometers. We observed that the core Fe3O4 nanoparticles showed a superparamagnetism at room temperature, whereas the shell CdX (X = S, Se) showed blue-shifts from the bulk materials in UV-visible absorption spectra, due to quantum confinement effect. These superparamagnetic and optical properties of the Fe3O4-CdX (X = S, Se) core–shell nanoparticles can be used for both MR and optical imagings. This dual imaging c

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Neumaier, Carlo Emanuele, Gabriella Baio, Silvano Ferrini, Giorgio Corte, and Antonio Daga. "MR and Iron Magnetic Nanoparticles. Imaging Opportunities in Preclinical and Translational Research." Tumori Journal 94, no. 2 (2008): 226–33. http://dx.doi.org/10.1177/030089160809400215.

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Ultrasmall superparamagnetic iron oxide nanoparticles and magnetic resonance imaging provide a non-invasive method to detect and label tumor cells. These nanoparticles exhibit unique properties of superparamagnetism and can be utilized as excellent probes for magnetic resonance imaging. Most work has been performed using a magnetic resonance scanner with high field strength up to 7 T. Ultrasmall superparamagnetic iron oxide nanoparticles may represent a suitable tool for labeling molecular probes that target specific tumor-associated markers for in vitro and in vivo detection by magnetic reson

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Sadjadi, M. S., A. Sharafi, and Nazanin Farhadyar. "Preparation of Surface Modified Fe₃O₄ Nanostructures via Inverse Micelle Method and Study of their Magnetic Properties for Biological Applications." Journal of Nano Research 21 (December 2012): 37–42. http://dx.doi.org/10.4028/www.scientific.net/jnanor.21.37.

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In this work, we report on the synthesis of superparamagnetic iron oxide nanoparticles at room temperature using microemulsion template phase consisting of cyclohexane, water, CTAB as cationic surfactant and butanol as a cosurfactant. Silica surface modification of the as-prepared nanoparticles was performed by adding TEOS directly to the alkaline medium. The structure, morphology, and magnetic properties of the products were characterized by X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometer (V

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Nguyen, Ngoc Uyen. "PREPARATION OF MAGNETIC HYDROGEL BY IN-SITU COPRECIPITATION PROCESS." Vietnam Journal of Science and Technology 56, no. 1A (2018): 167. http://dx.doi.org/10.15625/2525-2518/56/1a/12519.

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This study describes a preparation of magnetite nanoparticle by co-precipitation of Fe(II) and Fe(III) in alginate hydrogel matrix. This simple process is sufficient for producing a superparamagnetic, well dispersible magnetite nanoparticle in polymer hydrogel matrix. Two approaches for iron ions loadings are induced. The first approach includes two steps, the hydrogel beads are formed before the iron ions are being diffused into the hydrogel matrix. The second approach is the simultaneous forming of hydrogel containing iron ions. The ions loaded hydrogel is then coprecipitated in the presence

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Kondratyev, Vladimir N., and Vladimir A. Osipov. "Superferromagnetic Sensors." Nanomanufacturing 3, no. 3 (2023): 263–80. http://dx.doi.org/10.3390/nanomanufacturing3030017.

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The strong ferromagnetic nanoparticles are analyzed within the band structure-based shell model, accounting for discrete quantum levels of conducting electrons. As is demonstrated, such an approach allows for the description of the observed superparamagnetic features of these nanocrystals. Assemblies of such superparamagnets incorporated into nonmagnetic insulators, semiconductors, or metallic substrates are shown to display ferromagnetic coupling, resulting in a superferromagnetic ordering at sufficiently dense packing. Properties of such metamaterials are investigated by making use of the ra

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Ibrahim, Manjula M., Jianmin Zhao, and Mohindar S. Seehra. "Determination of particle size distribution in an Fe2O3-based catalyst using magnetometry and x-ray diffraction." Journal of Materials Research 7, no. 7 (1992): 1856–60. http://dx.doi.org/10.1557/jmr.1992.1856.

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In this paper, the techniques of SQUID magnetometry and line broadening in x-ray diffraction are employed for determining an important parameter for catalysts, viz. the particle size distribution. Magnetization versus temperature (5 K–400 K) and magnetization versus field (up to 55 kOe) data are reported for an α–Fe2O3 based catalyst. After determining the region of superparamagnetism, the distribution function f(r) is determined assuming a log normal distribution and Langevin paramagnetism of superparamagnetic particles. The distribution is found to be fairly symmetric with center near 65 Å a

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Vazhenina I.G., Stolyar S.V., Tyumentseva A.V., et al. "Study of magnetic iron oxide nanoparticles coated with silicon oxide by ferromagnetic method." Physics of the Solid State 65, no. 6 (2023): 884. http://dx.doi.org/10.21883/pss.2023.06.56095.01h.

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Magnetic nanoparticles of magnetite with a size of ~8 nm synthesized with a different type of coating were studied by ferromagnetic resonance in the temperature range from 7 to 300 K. The features of the experimental temperature dependences of the parameters of the ferromagnetic resonance curve (the magnitude of the resonant field, line width and intensity) and their approximation allowed us to estimate the values of characteristic temperatures. Firstly, the value of the Vervey temperature and the dependence of its value on the type of coating were determined. Secondly, the temperature of tran

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de Menezes, Fernando Lima, Davino Machado Andrade Neto, Maria do Livramento Linhares Rodrigues, et al. "From Magneto-Dielectric Biocomposite Films to Microstrip Antenna Devices." Journal of Composites Science 4, no. 4 (2020): 144. http://dx.doi.org/10.3390/jcs4040144.

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Magneto-dielectric composites are interesting advanced materials principally due to their potential applications in electronic fields, such as in microstrip antennas substrates. In this work, we developed superparamagnetic polymer-based films using the biopolymeric matrices chitosan (Ch), cellulose (BC) and collagen (Col). For this proposal, we synthesized superparamagnetic iron oxide nanoparticles (SPIONs) functionalized with polyethyleneimine with a cheap method using sonochemistry. Further, the SPIONs were dispersed into polymer matrices and the composites were evaluated regarding morpholog

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Vittur, Varadee, Arati G. Kolhatkar, Shreya Shah, Irene Rusakova, Dmitri Litvinov, and T. Randall Lee. "Near-infrared-responsive, superparamagnetic Au@Co nanochains." Beilstein Journal of Nanotechnology 8 (August 14, 2017): 1680–87. http://dx.doi.org/10.3762/bjnano.8.168.

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This manuscript describes a new type of nanomaterial, namely superparamagnetic Au@Co nanochains with optical extinctions in the near infrared (NIR). The Au@Co nanochains were synthesized via a one-pot galvanic replacement route involving a redox-transmetalation process in aqueous medium, where Au salt was reduced to form Au shells on Co seed templates, affording hollow Au@Co nanochains. The Au shells serve not only as a protective coating for the Co nanochain cores, but also to give rise to the optical properties of these unique nanostructures. Importantly, these bifunctional, magneto-optical

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Li, Cui Xia, Zhi Hong Li, Xue Yan Du, and Hai Xia Guo. "Synthesis and Magnetic Properties of FePt /Silica Core-Shell Nanoparticles." Advanced Materials Research 178 (December 2010): 291–95. http://dx.doi.org/10.4028/www.scientific.net/amr.178.291.

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FePt nanoparticles (NPS), ~2nm in diameter, were synthesized and then coated with silica (SiO2) shells ~1.5nm-thick using reverse micelles as nanoreactors. The silica-coated FePt core–shell (FePt @silica) NPS were characterized by direct techniques of transmission electron microscopy (TEM). The results showed that the silica shells prevented the aggregation in liquid comparing to their bare counterparts. The as-synthesized FePt@SiO2 NPS exhibited essential characteristics of superparamagnetic behavior, as investigated by a vibrating sample magnetometer (VSM). X-ray diffraction (XRD) studies pr

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Zhang, Min, and Qiangchun Liu. "Solvothermal Synthesis and Magnetic Properties of Monodisperse Ni0.5Zn0.5Fe2O4 Hollow Nanospheres." High Temperature Materials and Processes 38, no. 2019 (2019): 76–83. http://dx.doi.org/10.1515/htmp-2017-0101.

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AbstractThe monodisperse Ni0.5Zn0.5Fe2O4 nanospheres have been synthesized via a simple solvothermal method. The effects of reactant concentration on structural and magnetic properties have been studied. X-ray diffraction analysis results indicate that the lattice constant and crystallite size can be tuned by controlling reactant concentration. The nanosphere size monotonically decreases from 238 to 35 nm with increasing reactant concentration. The magnetic studies show that blocking temperature is enhanced, and these single-domain particles are superparamagnetism at room temperature. The holl

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Xu, Yaohui, Qin Wang, and Zhao Ding. "Synthesis of Superparamagnetic Fe3O4 Nano-Adsorbent Using an Energy-Saving and Pollution-Reducing Strategy for the Removal of Xylenol Orange Dye in Water." Energies 15, no. 19 (2022): 7378. http://dx.doi.org/10.3390/en15197378.

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The superparamagnetic Fe3O4 nanoparticles as an absorbent with a size distribution of 4.8–6.4 nm were synthesized using a simple one-pot hydrothermal strategy at 200 °C for 24 h, where iron citrate and distilled were the sum total of raw materials. The as-synthesized Fe3O4 powders showed rapid and efficient adsorption for xylenol orange with a saturated adsorption amount of 42.5 mg/g according to Langmuir linear fitting, and the adsorption reaction between xylenol orange adsorbate and Fe3O4 adsorbent was mostly completed within 10 min. The Fe3O4 nanoparticles not only had superparamagnetism wi

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Murad, E., L. H. Bowen, G. J. Long, and T. G. Quin. "The influence of crystallinity on magnetic ordering in natural ferrihydrites." Clay Minerals 23, no. 2 (1988): 161–73. http://dx.doi.org/10.1180/claymin.1988.023.2.04.

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AbstractMössbauer spectra of three natural ferrihydrites of different crystallinities were collected between 295 and 4·2 K. Optimal fits of the room-temperature spectra were obtained using distributions of quadrupole-split doublets; half-widths of the distributions (0·71–0·86 mm/s) increased, and maxima (at 0·62–0·78 mm/s) shifted to higher quadrupole splittings with decreasing crystallinity. Rather poorly-defined magnetically-ordered spectral components appeared and gradually replaced the superparamagnetic doublets as temperatures were reduced. Blocking temperatures between 115 and 28 K, deri

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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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Yi, Wentong, Yiwen Zhu, De Hou, et al. "Temperature measurement based on the magneto-optic Kerr effect in Ni nanofilms." Measurement Science and Technology 33, no. 6 (2022): 065110. http://dx.doi.org/10.1088/1361-6501/ac5c93.

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Abstract Thermometry is essential in laboratory and industry settings. We propose a noninvasive temperature measurement method based on the superparamagnetic properties of nickel-plated films. When the nickel (Ni) film is uniformly heated from 100 K to 300 K, we observe that the polarization angle of the reflected polarized light decreases correspondingly. Compared with optical temperature measurement, this method introduces magnetic physical quantity, which increases the penetration of temperature measurement. Compared with magnetic temperature measurement, this method introduces optical phys

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Mohapatra, Sasmita, Nabakumar Pramanik, Sudip K. Ghosh, and Panchanan Pramanik. "Synthesis and Characterization of Ultrafine Poly(vinylalcohol phosphate) Coated Magnetite Nanoparticles." Journal of Nanoscience and Nanotechnology 6, no. 3 (2006): 823–29. http://dx.doi.org/10.1166/jnn.2006.117.

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Nanosized magnetite (Fe3O4) particles showing superparamagnetism at room temperature have been prepared by controlled coprecipitation of Fe2+ and Fe3+ in presence of highly hydrophilic poly(vinylalcohol phosphate)(PVAP). The impact of polymer concentration on particle size, size distribution, colloidal stability, and magnetic property has been extensively studied. The aqueous suspension of magnetite, prepared using 1% PVAP solution is stable for four weeks at pH 5–8. X-ray diffractograms show the formation of nanocrystalline inverse spinel phase magnetite. Transmission Electron Microscopy conf

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Teng, Yu, Jie Liu, Zhixian Zhong, and Xiaodong Wang. "Fabrication and characterization of Fe3O4/PVP magnetic nanofibers via gas-solid reaction method." Highlights in Science, Engineering and Technology 84 (February 27, 2024): 206–12. http://dx.doi.org/10.54097/tgfxca37.

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In order to obtain uniform dispersion of Fe3O4 in composite nanofibers, a new method is used by mixing compound of Fe3+ and Fe2+ with organic polymer polyvinylpyrrolidone (PVP), then subjected nanofibers through electrospinning and formed ferric oxide/polyvinylpyrrolidone (Fe3O4/PVP) fibers via in-situ by gas-solid reaction under the condition of NH3. The morphology of the fibers and the dispersion of Fe3O4 particles in the fibers were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The crystallization of the magnetic fibers was characterized by

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Campbell, Scott B., Mathew Patenaude, and Todd Hoare. "Injectable Superparamagnets: Highly Elastic and Degradable Poly(N-isopropylacrylamide)–Superparamagnetic Iron Oxide Nanoparticle (SPION) Composite Hydrogels." Biomacromolecules 14, no. 3 (2013): 644–53. http://dx.doi.org/10.1021/bm301703x.

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Li, Bibo, Biqiang Li, Daiying He, Changyan Feng, Zhibin Luo, and Mei He. "Preparation, Characterization, and In Vitro pH-sensitivity Evaluation of Superparamagnetic Iron Oxide Nanoparticle- Misonidazole pH-sensitive Liposomes." Current Drug Delivery 16, no. 3 (2019): 254–67. http://dx.doi.org/10.2174/1567201816666181114124333.

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Background: The use of Misonidazole (MISO), the first and a potential hypoxic tumor cell radiosensitizer, has been limited by peripheral neurotoxicity, thus discouraging phase III clinical trials. Objective: To develop a targeted drug delivery and tracing System with pH-sensitive liposomes (SpHLs) and Superparamagnetic Iron Oxide Nanoparticles (SPIONs) to counter MISO-related adverse effects and to enable tracing under magnetic resonance. Methods: SPION-MISO-SpHLs were prepared by a reverse evaporation and freeze-thawing method. HPLC and phenanthroline spectrophotometry were established for MI

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Pfannes, H. D., J. H. Dias Filho, R. Paniago, and R. Magalhães-Paniago. "Methods of Simulating Superparamagnetic Relaxation Mössbauer Spectra and Attempts of Foundation of a Microscopic Theory of Superparamagnetism." Hyperfine Interactions 148/149, no. 1-4 (2003): 243–52. http://dx.doi.org/10.1023/b:hype.0000003786.14363.62.

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Zemtsova, E. G., A. N. Ponomareva, A. Y. Arbenin, and V. M. Smirnov. "Structural Organization of Themagnetic Part of Smart Material Based on Nanoparticles of Iron or Magnetite in Pores of Mcm-41 Mesoporous Silica for Target Drug Delivery." REVIEWS ON ADVANCED MATERIALS SCIENCE 57, no. 2 (2018): 175–82. http://dx.doi.org/10.1515/rams-2018-0062.

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Abstract The important stage of the development of smart material for the target drug delivery is the construction of the magnetic part of this material, including mesoporous silica and magnetic nanoparticles (Fe3O4or Fe0). Such a systemwill allow carry outmagnetic decapsulation (excretion) of drug from smart material using the magnetic field of a given value in the right place of the body. The paper considers the features of synthesis mesoporous silica MCM-41 with various pore diameter (33-51 Å) and synthesis of superparamagnetic nanoparticles of magnetite or metallic iron in the pores of mes

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Ma, Tengfei, and Peng Liu. "Magnetic Nanomaterials in Chinese Medicine Chemical Composition Analysis and Drug Metabolism and Its Industry Prospect and Development Path Research." Journal of Chemistry 2020 (September 30, 2020): 1–8. http://dx.doi.org/10.1155/2020/1234269.

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The paramagnetism and superparamagnetism of magnetic nanomaterials are very important for in vivo applications. The magnetic particles with paramagnetism or superparamagnetism can redistribute the magnetic particles after the magnetic field is withdrawn, which is widely used for the separation and purification of biomolecules. At the same time, superparamagnetic particles can also be used as MRI imaging contrast agent. Compared with Western medicine, traditional Chinese medicine is different from Western medicine in that it is originated from nature and has thousands of years of clinical effic

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Lu, Qizheng, Haibo Liu, Hao Zheng, et al. "SS-31 Modification Inhibits the Proinflammatory Effect on Macrophages Induced by Superparamagnetic Iron Oxide Nanoparticles." Journal of Biomedical Nanotechnology 18, no. 5 (2022): 1413–22. http://dx.doi.org/10.1166/jbn.2022.3359.

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Superparamagnetic iron oxide nanoparticles can induce macrophage polarization into the proinflammatory M1-type. This adverse effect is very likely to restrict the applications of superparamagnetic iron oxide nanoparticles in various inflammatory medical conditions. To inhibit the proinflammatory effect, the mitochondrial-targeted antioxidant peptide SS-31 was physically adsorbed on superparamagnetic iron oxide nanoparticles to develop superparamagnetic iron oxide nanoparticles@SS-31. The macrophages (RAW 264.7) were incubated with superparamagnetic iron oxide nanoparticles or superparamagnetic

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Saranu, Srinivasa, Sören Selve, Ute Kaiser, et al. "Effect of large mechanical stress on the magnetic properties of embedded Fe nanoparticles." Beilstein Journal of Nanotechnology 2 (June 1, 2011): 268–75. http://dx.doi.org/10.3762/bjnano.2.31.

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Magnetic nanoparticles are promising candidates for next generation high density magnetic data storage devices. Data storage requires precise control of the magnetic properties of materials, in which the magnetic anisotropy plays a dominant role. Since the total magneto-crystalline anisotropy energy scales with the particle volume, the storage density in media composed of individual nanoparticles is limited by the onset of superparamagnetism. One solution to overcome this limitation is the use of materials with extremely large magneto-crystalline anisotropy. In this article, we follow an alter

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Bin, Shizhen, Ailun Wang, Wang Guo, Li Yu, and Pei Feng. "Micro Magnetic Field Produced by Fe3O4 Nanoparticles in Bone Scaffold for Enhancing Cellular Activity." Polymers 12, no. 9 (2020): 2045. http://dx.doi.org/10.3390/polym12092045.

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The low cellular activity of poly-l-lactic acid (PLLA) limits its application in bone scaffold, although PLLA has advantages in terms of good biocompatibility and easy processing. In this study, superparamagnetic Fe3O4 nanoparticles were incorporated into the PLLA bone scaffold prepared by selective laser sintering (SLS) for continuously and steadily enhancing cellular activity. In the scaffold, each Fe3O4 nanoparticle was a single magnetic domain without a domain wall, providing a micro-magnetic source to generate a tiny magnetic field, thereby continuously and steadily generating magnetic st

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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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Sibov, Tatiana Taís, Liza Aya Mabuchi Miyaki, Javier Bustamante Mamani, et al. "Evaluation of umbilical cord mesenchymal stem cell labeling with superparamagnetic iron oxide nanoparticles coated with dextran and complexed with Poly-L-lysine." Einstein (São Paulo) 10, no. 2 (2012): 180–88. http://dx.doi.org/10.1590/s1679-45082012000200011.

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OBJECTIVE: The objective of this study was to evaluate the effect of the labeling of umbilical cord vein derived mesenchymal stem cells with superparamagnetic iron oxide nanoparticles coated with dextran and complexed to a non-viral transfector agent transfector poly-L-lysine. METHODS: The labeling of mesenchymal stem cells was performed using the superparamagnetic iron oxide nanoparticles/dextran complexed and not complexed to poly-L-lysine. Superparamagnetic iron oxide nanoparticles/dextran was incubated with poly-L-lysine in an ultrasonic sonicator at 37°C for 10 minutes for complex formati

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Hsu, Chen. "Novel Magnetic Levitation of Nanoiron Oxide for Dynamically Measuring Crystallinity and Uniformity." Nanomedicine & Nanotechnology Open Access 8, no. 4 (2023): 1–6. http://dx.doi.org/10.23880/nnoa-16000273.

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This study explores the magnetic levitation (maglev) characteristics of superparamagnetic iron oxides (Fe3 O4 ) used as motor-driven rotors in gyroscopes under low-alternating magnetism. Herein, superparamagnetic Fe3 O4 was synthesized in a nanopowder form using the sol–gel method. The maglev force that stabilizes a rotating gyroscope depends on the rotation speed. This force exhibits a wide range of values. The stability of the synthesized superparamagnetic Fe3 O4 increases with its size. The rotation stability was measured based on the size of a red laser spot and was found to depend on the

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Żuk, Michał, Weronika Gawęda, Agnieszka Majkowska-Pilip, et al. "Hybrid Radiobioconjugated Superparamagnetic Iron Oxide-Based Nanoparticles for Multimodal Cancer Therapy." Pharmaceutics 13, no. 11 (2021): 1843. http://dx.doi.org/10.3390/pharmaceutics13111843.

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Superparamagnetic iron oxide nanoparticles (SPIONs) are widely used for biomedical applications for their outstanding properties such as facile functionalization and doping with different metals, high surface-to-volume ratio, superparamagnetism, and biocompatibility. This study was designed to synthesize and investigate multifunctional nanoparticle conjugate to act as both a magnetic agent, anticancer immunological drug, and radiopharmaceutic for anticancer therapy. The carrier, 166Ho doped iron oxide, was coated with an Au layer, creating core-shell nanoparticles ([166Ho] Fe3O4@Au. These nano

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Wang, Tao, and Thomas Ming Swi Chang. "Superparamagnetic Artificial Cells PLGA-Fe3O4 Micro/Nanocapsules for Cancer Targeted Delivery." Cancers 15, no. 24 (2023): 5807. http://dx.doi.org/10.3390/cancers15245807.

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Artificial cells have been extensively used in many fields, such as nanomedicine, biotherapy, blood substitutes, drug delivery, enzyme/gene therapy, cancer therapy, and the COVID-19 vaccine. The unique properties of superparamagnetic Fe3O4 nanoparticles have contributed to increased interest in using superparamagnetic artificial cells (PLGA-Fe3O4 micro/nanocapsules) for targeted therapy. In this review, the preparation methods of Fe3O4 NPs and superparamagnetic artificial cell PLGA-drug-Fe3O4 micro/nanocapsules are discussed. This review also focuses on the recent progress of superparamagnetic

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Lee, Jung Woo, Ravindranath Viswan, Yoon Jeong Choi, et al. "Superparamagnetic Nanoparticles: Facile Fabrication and Superparamagnetism of Silica-Shielded Magnetite Nanoparticles on Carbon Nitride Nanotubes (Adv. Funct. Mater. 14/2009)." Advanced Functional Materials 19, no. 14 (2009): NA. http://dx.doi.org/10.1002/adfm.200990060.

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Rhee, Ilsu. "Superparamagnetic Transition in Ultrasmall Superparamagnetic Iron Oxide Nanoparticles." Journal of the Korean Physical Society 54, no. 4 (2009): 1721–24. http://dx.doi.org/10.3938/jkps.54.1721.

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Landry, Cody, Alexander Morrison, Mehdi Esmaeili, and Khashayar Ghandi. "Muon Irradiation of ZnO Rods: Superparamagnetic Nature Induced by Defects." Nanomaterials 12, no. 2 (2022): 184. http://dx.doi.org/10.3390/nano12020184.

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In this work, through a combination of photoluminescence spectroscopy, X-ray powder diffraction and magnetic measurements, it is determined that ZnO rods, made hydrothermally using a combination of magnetic field with respect to the force of gravity, exhibit superparamagnetic properties which emerge from Zn defects. These Zn defects result in a size-dependent superparamagnetic property of the rods. Red emissions, characteristic of Zn vacancies, and magnetic susceptibility both increased with decreasing rod size. The ZnO rods have significantly larger superparamagnetic cluster sizes (one order

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Pietrzyk, Paulina, Nguyen Thu Phuong, Sunday Joseph Olusegun, et al. "Titan Yellow and Congo Red Removal with Superparamagnetic Iron-Oxide-Based Nanoparticles Doped with Zinc." Magnetochemistry 8, no. 8 (2022): 91. http://dx.doi.org/10.3390/magnetochemistry8080091.

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In this work, we present magnetic nanoparticles based on iron oxide doped with zinc synthesized using the wet co-precipitation method for environmental application. The morphology of the samples was revealed by SEM and TEM, which showed particles of granular shape and size of about 15 nm. The specific surface areas of the materials using the BET method were within the range of 85.7 to 101.5 m2 g−1 depending on the zinc content in the superparamagnetic iron oxide nanoparticles (SPIONs). Magnetometry was performed to determine the magnetic properties of the particles, indicating superparamagneti

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Ngema, Lindokuhle M., Samson A. Adeyemi, Thashree Marimuthu, Philemon Ubanako, Daniel Wamwangi, and Yahya E. Choonara. "Synthesis of Novel Conjugated Linoleic Acid (CLA)-Coated Superparamagnetic Iron Oxide Nanoparticles (SPIONs) for the Delivery of Paclitaxel with Enhanced In Vitro Anti-Proliferative Activity on A549 Lung Cancer Cells." Pharmaceutics 14, no. 4 (2022): 829. http://dx.doi.org/10.3390/pharmaceutics14040829.

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The application of Superparamagnetic Iron Oxide Nanoparticles (SPIONs) as a nanomedicine for Non-Small Cell Lung Carcinoma (NSCLC) can provide effective delivery of anticancer drugs with minimal side-effects. SPIONs have the flexibility to be modified to achieve enhanced oading of hydrophobic anticancer drugs such as paclitaxel (PTX). The purpose of this study was to synthesize novel trans-10, cis-12 conjugated linoleic acid (CLA)-coated SPIONs loaded with PTX to enhance the anti-proliferative activity of PTX. CLA-coated PTX-SPIONs with a particle size and zeta potential of 96.5 ± 0.6 nm and −

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Vallabani, Naga Veera Srikanth, Sanjay Singh, and Ajay Singh Karakoti. "Magnetic Nanoparticles: Current Trends and Future Aspects in Diagnostics and Nanomedicine." Current Drug Metabolism 20, no. 6 (2019): 457–72. http://dx.doi.org/10.2174/1389200220666181122124458.

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Background: Biomedical applications of Magnetic Nanoparticles (MNPs) are creating a major impact on disease diagnosis and nanomedicine or a combined platform called theranostics. A significant progress has been made to engineer novel and hybrid MNPs for their multifunctional modalities such as imaging, biosensors, chemotherapeutic or photothermal and antimicrobial agents. MNPs are successfully applied in biomedical applications due to their unique and tunable properties such as superparamagnetism, stability, and biocompatibility. Approval of ferumoxytol (feraheme) for MRI and the fact that sev

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Li, Weiyue, Xiang Xiao, Xiaodan Li, et al. "Detecting GPC3-Expressing Hepatocellular Carcinoma with L5 Peptide-Guided Pretargeting Approach: In Vitro and In Vivo MR Imaging Experiments." Contrast Media & Molecular Imaging 2018 (September 10, 2018): 1–11. http://dx.doi.org/10.1155/2018/9169072.

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Objective. To investigate the potential of L5 peptide-guided pretargeting approach to identify GPC3-expressing hepatocellular carcinoma (HCC) using ultrasmall superparamagnetic iron oxide (USPIO) as the MR probe. Methods. Immunofluorescence with carboxyfluorescein- (FAM-) labeled L5 peptide was performed in HepG2 cells. Polyethylene glycol-modified USPIO (PEG-USPIO) and its conjugation with streptavidin (SA-PEG-USPIO) were synthesized, and their hydrodynamic diameters, zeta potential, T2 relaxivity, and cytotoxicity were measured. In vitro and in vivo two-step pretargeting MR imaging was perfo

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Madkhali, Nawal, Saja Algessair, O. M. Lemine, Ali Z. Alanzi, N. Ihzaz та L. EL Mir. "Heating Ability of γ-Fe₂O₃@ZnO/Al Nanocomposite for Magnetic Hyperthermia Applications". Science of Advanced Materials 14, № 8 (2022): 1394–400. http://dx.doi.org/10.1166/sam.2022.4333.

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The development of nanocomposite for magnetic fluid hyperthermia applications is in high demand and has captivated the interest of researchers in recent years. Herein, we report the synthesis by sol–gel method, heating ability, and the characterization of γ-Fe2O3@ZnO/Al nanocomposite with several techniques, including X-ray diffraction, Fourier transformer Infrared, Transmission electron microscopy, energy dispersive spectroscopy and vibrating sample magnetometer. X-ray diffraction and Rietveld analysis showed the formation of the nanocomposite with the presence of maghemite (γ-Fe2O3) and ZnO.

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