Coercivity and nucleation field of hollow ferromagnetic particles

Ching-Ming Lee; Ching-Ray Chang

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Coercivity and nucleation field of hollow ferromagnetic particles

机译：空心铁磁粒子的矫顽力和成核场

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摘要

Calculations of nucleation fields and critical radii of three possible magnetization reversal modes for an infinite ferromagnetic hollow cylinder with exchange and uniaxial anisotropy are made using Brown's equation. It shows that the curling mode is the favored mode for large radius and the nucleation fields for curling and buckling modes decrease for increasing outer radius and the ratio of inner to outer radius. The transition between these modes is very sensitive to the ratio of inner to outer radius.

机译：利用布朗方程，对具有交换和单轴各向异性的无限铁磁空心圆柱体的三种可能的磁化反转模式的成核场和临界半径进行了计算。结果表明，卷曲模式是大半径的首选模式，而卷曲和屈曲模式的形核场则随着外半径的增加和内外比的增加而减小。这些模式之间的过渡对内半径与外半径之比非常敏感。

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来源
《Materials Chemistry and Physics》 |1996年第2期|p.183-186|共4页
作者
Ching-Ming Lee; Ching-Ray Chang;
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作者单位

Department of Physics, National Taiwan University, Taipei, Taiwan, ROC;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类工程材料学;工程基础科学;
关键词
coercivity; ferromagnetic particles; magnetization reversal modes; nucleation fields;

机译：矫顽力;铁磁粒子;磁化反转模式;成核场;

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1. Magnetic Force Microscope Contrast Simulation for Low-Coercive Ferromagnetic and Superparamagnetic Nanoparticles in an External Magnetic Field [J] . Mironov V. L., Nikitushkin D. S., Bins C., IEEE Transactions on Magnetics . 2007,第11期

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2. Size, anisotropy and doping effects on the coercive field of ferromagnetic nanoparticles [J] . Wesselinowa JM, Apostolova I Journal of Physics. Condensed Matter . 2007,第40期

机译：尺寸，各向异性和掺杂对铁磁纳米粒子矫顽场的影响
3. The field rate dependence of coercivity in fine particle ferromagnets and the applicability of the critical volume approach [J] . Farrant S.H., Crew D.C. IEEE Transactions on Magnetics . 1996,第5期

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5. Coercivity and Exchange Bias Study of Polycrystalline Hollow Nanoparticles. [D] . Bah, Mohamed Alpha. 2017

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7. Domain wall nucleation in ferromagnetic nanowire with perpendicular magnetization stimulated by stray field of V-shaped magnetic particle [O] . Ermolaeva, O. L., Mironov, V. L. 2017

机译：具有垂直的铁磁纳米线中的畴壁成核由V形磁粒子的杂散场激发的磁化

Coercivity and nucleation field of hollow ferromagnetic particles

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