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The Magnetic Properties of Fine Particles | SpringerLink
Magnetic fine particles find a large number of applications, perhaps most notably as particulate recording media. In addition, the ideas of fine particle magnetism are applicable in a number of …
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The Magnetic and Color Reflectance Properties of …
The spin-canted magnetic moment in fine-grained natural hematite is harder than the defect moment and is dominated by uniaxial magnetoelastic anisotropy. ... Use of magnetic properties to extract information about hematite …
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Significantly improved magnetic properties of FeSiAl soft …
In this paper, FeSiAl soft magnetic composite materials (SMCs) with excellent comprehensive soft magnetic properties were prepared by adding an appropriate amount of …
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The improved magnetic properties of FeSi powders cores …
3.2 Magnetic properties. As demonstrated in Fig. 3, the effective permeability of FeSi magnetic powder cores with different fine particles contents has good frequency stability in the frequency range of 1 kHz–1 MHz, This indicates that with the increase of frequency, the eddy current in the powder core is effectively suppressed, which proves that the surface of the …
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[PDF] Structural, magnetic and electrical properties of the sol-gel
Fine particles of lithium ferrite were synthesized by the sol-gel method. By subsequent heat treatment at different temperatures, lithium ferrites of different grain sizes were prepared. A structural characterization of all the samples was conducted by the x-ray diffraction technique. A grain size of around 12 nm was observed for Li0.5Fe2.5O4 obtained through the sol-gel …
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Magnetic properties of fine cobalt particles prepared by metal …
Ultrafine particles of cobalt were prepared under argon by reduction of cobalt halide solutions in diglyme ether with metallic lithium and a naphthalene catalyst. The fine particles had a particle diameter in the range 50–1200 A. The size was dependent on the reaction temperature. X‐ray diffraction showed crystalline particles of α‐Co and CoO. Because the ratio of the metal …
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Fine tuning in-sync the mechanical and magnetic properties of …
Therefore, we wonder whether it is possible to achieve good mechanical and magnetic properties of the FeCoNiAl 0.25 Mn 0.25 alloy through fine control of the microstructure. The objective of the current work is to deliberately explore the influence of annealing treatment on phase composition, microstructure and properties (mechanical and ...
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Size-dependent magnetic properties of MnFe2O4 fine particles
Thermomagnetic, differential scanning calorimetry and Moss spectroscopy show that heat treatment under inert gas to 670 K irreversibly changes the cation distribution to a stable state and the Curie temperature is modified in association with these changes. Manganese ferrite, ${mat{MnFe}}_{2}$${mat{O}}_{4}$, fine particles in the size range …
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Surface magnetic properties of fine particles
Journal of Magnetism and Magnetic Materials 35 (1983) 105-113 North-Holland Publishing Company SURFACE MAGNETIC PROPERTIES OF FINE PARTICLES A.H. MORRISH and K. HANEDA Department of Physics, University of Manitoba, Winnipeg, Canada R3T 2N2 105 Fine particles offer an attractive avenue for the study of the magnetic …
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The Role of Dehydrogenation Conditions on Sinterability and Magnetic
Fig. 9. Variation of i Hc of the sintered NdFeB magnets obtained by different processes in this study. - "The Role of Dehydrogenation Conditions on Sinterability and Magnetic Properties of Fine NdFeB Powders Consolidated With Hydrogen-Containing Sintering"
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Enhanced high-frequency electromagnetic properties of Fe-based
In this work, toroid-shaped Fe-based amorphous soft magnetic composites (SMCs) consisting of FeSiBC amorphous powder and carbonyl iron powder (CIP) were prepared by cold pressing. The effects of CIP mass ratio and compaction pressure on the high-frequency electromagnetic properties were systematically investigated. As the CIP content is increased …
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Magnetic properties regulation and loss contribution analysis of …
Therefore, there are more magnetic phases content per unit volume of magnetic powder core, and then optimize the magnetic properties of magnetic powder core. The addition of fine powder method was used to improve the relative density and then optimize the magnetic properties of magnetic powder cores [19], [20], [22], [23].
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Structure and magnetic properties of synthesized fine cerium …
Cerium dioxide, which is diamagnetic in its bulk crystalline fluorite form, exhibits ferromagnetism when prepared as a nanopowder.This characteristic has recently been ascribed to localized electron spin moments formed at oxygen vacancies near the nanoparticle surfaces. In the present study, a number of structure-sensitive and magnetic methods were applied to CeO …
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Size-dependent magnetic properties of fine particles synthesized …
Manganese ferrite, ${mat{MnFe}}_{2}$${mat{O}}_{4}$, fine particles in the size range 5--15 nm have been prepared by an aqueous phase coprecipitation method. The freshly prepared particles are in a metastable state with regard to the cation distribution between the A and B sites of the spinel lattice. Thermomagnetic, differential scanning calorimetry and …
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Preparation and Soft Magnetic Properties of FeNi@Al2O3 …
High-flux ferronickel powder cores are widely used in high-frequency transformers and other fields due to their high saturation flux density and low core loss. In this paper, FeNi@Al2O3 composites with varying Al2O3 contents (0.0–5.0 wt.%) were prepared. Their microstructure, magnetic properties, and power losses were investigated in detail. SEM morphology indicates that …
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Magnetic Properties of FeSiBCr/Carbonyl Iron Amorphous Soft Magnetic
Because the particles are very fine, CIP has good filling performance for FeSiBCr powder, which increases the density of FeSiBCr/CIP ... J. Pang, and J.Q. Zhang, Soft Magnetic Properties Regulation of FeSiBC Amorphous Powders/CIP Magnetic Powder Core with Single and Double-Layer Core–Shell Structure, J. Magn. Magn. Mater., 2023, 578, p ...
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THE MAGNETIC PROPERTIES OF FINE PARTICLES R W …
Magnetic fine particles find a large number of applications, perhaps most notably as particulate recording media. In addition, the ideas of fine particle magnetism are applicable ... The magnetic properties for a given particle size are thus described by the Langevin function: L(b) = coth(b) - …
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Magnetic Properties of Fine Particles | ScienceDirect
All aspects of fine magnetic particles are covered in the 46 papers. The topics are remarkably interdisciplinary covering theory, materials preparation, structural characterization, optical and electrical properties, magnetic properties studied by different techniques and applications.
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Improvement for soft magnetic properties of FeSiBCuNb …
The DC-bias performance of metal magnetic cores is essential in regulating magnetic properties, improving stability, and optimizing energy efficiency. Therefore, it is necessary to fully consider the influence of DC-bias performance to find the best performance balance point when selecting and designing metal magnetic cores.
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The Magnetic Properties of Fine Particles | Semantic Scholar
Magnetic fine particles find a large number of applications, perhaps most notably as particulate recording media. In addition, the ideas of fine particle magnetism are applicable in a number of …
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Journal of Magnetism and Magnetic Materials
The magnetic properties were measured with a Epstein test frame stacked with an equal number of coupons in longitudinal and transverse directions. ... Fig. 9 shows the influences of hot rolled microstructures controlled by fine-tuning Al content in magnetic properties. The steel A had the lowest magnetic induction B 50 of 1.748 T and the ...
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Magnetic Properties: A Guide to Materials Science
Magnetic Properties are a driving force in materials science and mechanical engineering, shaping how we design and power the world. They blend science with practicality, turning raw materials into magnetic marvels. As technology advances—think renewable energy or robotics—these properties will fuel even bolder innovations. Master them now ...
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Magnetic Properties of Fine Particles
All aspects of fine magnetic particles are covered in the 46 papers. The topics are remarkably interdisciplinary covering theory, materials preparation, structural characterization, …
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Nickel films deposited between amorphous silicon layers: Effects …
By carefully fine-tuning the annealing conditions, we were able to systematically monitor the enhancement of perpendicular magnetic anisotropy while minimizing the formation of structural defects or alterations to the material's morphology. ... These magnetic properties could be particularly significant for various applications in magnetic ...
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Electrical and Magnetic Properties Soft magnetic properties of fine
The crystallized Fe BN O films exhibit good soft magnetic properties with high ϱ and low ... (1994) 1025-1029 1025 Soft magnetic properties of fine crystalline Fe-BN and Fe-BN-O films S. , S. Ohnuma and F. Matsumoto Amorphous Magnetic Device Laboratory, Sendai 989-32 (Japan) H. Fujimori and T. Masumoto Institute for Material Research ...
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Magnetic properties of isotropic SrFe12O19 fine particles …
M-type Sr-hexaferrites fine particles have been prepared by mechanical alloying. The influences of milling conditions on magnetic properties of SrFe 12 O 19 compounds have been systematically investigated. It can be found that annealing treatment at low temperature can play similar role in structural transformation as compared with long time milling process.
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Magnetic Properties of Fe16N2 Fine Particles.
Heat conditions for synthesis of Fe16N2 tine particles and the resulting magnetic properties were investigated. Commercial ultra fine γ - Fe2O3 particles were first reduced under hydrogen gas at temperatures between 200°C and 700°C for 8 hours and nitrided under an ammonia-argon mixed gas at 140°C for 24 hours. The powder reduced at 500°C and nitrided at 140°C was identified …
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The improved magnetic properties of FeSi powders …
The magnetic powder core with 20 wt% fine particles has the optimum comprehensive soft magnetic properties, it shows the effective permeability (µ) of 64, which is increased by 25%, saturation ...
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Magnetic Properties of Fine Particles
Magnetic properties of fine-grained minerals E. Murad 339 Small particles in catalysts, catalysis and surface chemistry J.W. Niemantsverdriet 351 Surface properties of heterogeneous magnetic particles by physisorption P.L. Cavallotti, L. Nobili, G. Zangari, A. Adamoli and
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Significantly improved magnetic properties of FeSiAl soft-magnetic
In this work, the effects of adding FeSi fine particles and regulating temperature on the magnetic properties of FeSiAl soft magnetic composites (SMCs) are studied. It shows that the addition of FeSi fine particles can effectively fill the pores among FeSiAl particles, reducing the content of non-magnetic substances and improving the density of ...
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