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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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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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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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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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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Manganese ferrite, MnFe 2 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 …
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VOL 35, NO 5, SEPTEMBER 1999 3469 Static and dynamic magnetic properties of fine CoNi and FeCoNi particles synthesized by the poly01 process Philippe Toneguzzo and Olivier Acher CEA Le Ripault, BP 16, F-37260 Monts, France. zyxwvutsr zyxwvutsrq zy zyxw Guillaume Viau, Angklique Pierrard, Franqoise Fievet-Vincent and Fernand Fikvet Laboratoire ...
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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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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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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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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 …
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Fine particles of MnBi were prepared by the hydrogen plasma metal reaction method and their magnetic properties were investigated. The particle size of the as-prepared MnBi particles was 70950nm with a median diameter of 269nm. Heat treatment and ball milling with a dispersant improved the magnetic properties of the particles.
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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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Size-dependent magnetic properties of MnFe2O4 fine particles synthesized by coprecipitation Phys Rev B Condens Matter. 1996 Oct 1;54(13):9288-9296. doi: 10.1103/physrevb.54.9288. Authors JP Chen, CM Sorensen, KJ Klabunde, GC Hadjipanayis, E Devlin, A Kostikas. PMID: 9984662 ...
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The magnetic properties of nano-sized Cu 2 O with and without magnetic doping have also received renewed attention due to the fundamental interest for the study of spin-polarized transport ...
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Many scholars have conducted studies on the additive manufacturing process and microstructure evolution of soft magnetic materials. Zhang et al. [8, 9] studied the microstructure and magnetic properties of Fe–Ni alloy, and found that homogeneous fine grains can be achieved using low laser scanning speeds.Chaudhary et al. [10] prepared Co–Fe magnetic alloy …
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Fine CoNi and FeCoNi particles elaborated by the polyol process over a wide size range display a core shell texture. From the study of the coercivity and remanence against the particle size, the critical size below which the CoNi particles are single domains is estimated in the 20-40 nm range. The comparison between static and dynamic properties shows that exchange resonance …
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Low-temperature grain-oriented (LTGO) silicon steel fabricated by low slab reheating temperature method is an ideal electromagnetic material due to its high magnetic induction and low core loss along the rolling direction, and in order to obtain excellent magnetic properties, a sharp Goss texture ({1 1 0} 〈0 0 1〉 ) should be achieved by secondary …
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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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The aim of this volume is to advance the understanding of the fundamental properties of fine magnetic particles and to discuss the latest developments from both the theoretical and experimental viewpoints, with special emphasis being placed on the applications in different branches of science and technology.All aspects of fine magnetic particles are covered …
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We investigate the particle size dependence of magnetic properties of ZnFe 2 O 4 fine particles. The fine particles with different particle sizes were obtained by heating the coprecipitated powder. The magnetization slowly increases with decreasing the particle size, and drastically in the particles with diameter < 30 nm The size dependent magnetization shows …
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The development of novel soft magnetic composites (SMCs) is driven by the demand for lightweight and highly stable electronic components. In this work, the influence of fine powder content on the ...
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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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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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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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INTRINSIC PARTICLE PROPERTIES The magnetic behaviour of a fine particle system is to a large extent governed by the intrinsic properties of the particles. The most important property …
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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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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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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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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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