Effects of grain size distribution on remanence and coercivity of Pr2Fe14B nanocrystalline magnet

doi:10.1088/1009-1963/14/5/036

中国物理B ›› 2005, Vol. 14 ›› Issue (5): 1055-1059.doi: 10.1088/1009-1963/14/5/036

Effects of grain size distribution on remanence and coercivity of Pr₂Fe₁₄B nanocrystalline magnet

张宏伟¹, 荣传兵¹, 陈仁杰¹, 沈保根¹, 贺淑莉²

(1)State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China; (2)State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China；Department of Physics, Capital Normal University, Beijing 100037, China

收稿日期:2004-11-30 修回日期:2005-01-19 出版日期:2005-05-19 发布日期:2005-05-19
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10274102)

Effects of grain size distribution on remanence and coercivity of Pr₂Fe₁₄B nanocrystalline magnet

He Shu-Li (贺淑莉)^ab, Zhang Hong-Wei (张宏伟)^a, Rong Chuan-Bing (荣传兵)^a, Chen Ren-Jie (陈仁杰)^a, Shen Bao-Gen (沈保根)^a

^a State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China; ^b Department of Physics, Capital Normal University, Beijing 100037, China

Received:2004-11-30 Revised:2005-01-19 Online:2005-05-19 Published:2005-05-19
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10274102)

摘要/Abstract

摘要： The demagnetization curves of Pr2Fe14B nanocrystalline magnets are calculated using micromagnetic finite-element method. The samples with three different distributions of grain size are simulated. The remanence enhancement does not depend on grain size distribution but on the mean diameter of grains. The influence of grain size distribution on coercivity is affected by the strength of intergrain exchange coupling.

关键词: nanocrystalline magnets, coercivity, remanence

Abstract: The demagnetization curves of Pr₂Fe₁₄B nanocrystalline magnets are calculated using micromagnetic finite-element method. The samples with three different distributions of grain size are simulated. The remanence enhancement does not depend on grain size distribution but on the mean diameter of grains. The influence of grain size distribution on coercivity is affected by the strength of intergrain exchange coupling.

Key words: nanocrystalline magnets, coercivity, remanence

中图分类号:

7560E

贺淑莉, 张宏伟, 荣传兵, 陈仁杰, 沈保根. Effects of grain size distribution on remanence and coercivity of Pr₂Fe₁₄B nanocrystalline magnet[J]. 中国物理B, 2005, 14(5): 1055-1059.

He Shu-Li (贺淑莉), Zhang Hong-Wei (张宏伟), Rong Chuan-Bing (荣传兵), Chen Ren-Jie (陈仁杰), Shen Bao-Gen (沈保根). Effects of grain size distribution on remanence and coercivity of Pr₂Fe₁₄B nanocrystalline magnet[J]. Chinese Physics, 2005, 14(5): 1055-1059.

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Effects of grain size distribution on remanence and coercivity of Pr₂Fe₁₄B nanocrystalline magnet

Effects of grain size distribution on remanence and coercivity of Pr₂Fe₁₄B nanocrystalline magnet

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