| 晶粒大小分布对纳米晶磁体Pr2Fe14B剩磁和矫顽力的影响 |
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| 引用本文： | 贺淑莉,张宏伟,荣传兵,陈仁杰,沈保根.晶粒大小分布对纳米晶磁体Pr2Fe14B剩磁和矫顽力的影响[J].中国物理 B,2005,14(5):1055-1059. |
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| 作者姓名： | 贺淑莉 张宏伟 荣传兵 陈仁杰 沈保根 |
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| 作者单位： | 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;State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 10274102) |
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| 摘 要： | 用微磁学有限元法计算了纳米晶磁体Pr2Fe14B的退磁曲线，文中模拟了三种具有不同晶粒大小分布的样品。计算结果表明，剩磁增强与磁体的晶粒尺寸分布情况无关而依赖于平均晶粒直径。晶粒尺寸分布对矫顽力的影响与磁体中的晶间交换耦合作用密切相关。
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| 关 键 词： | 纳米晶磁体，矫顽力，剩磁 |
| 收稿时间： | 2004-11-30 |
Effects of grain size distribution on remanence and coercivity of Pr2Fe14B nanocrystalline magnet |
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| He Shu-Li,Zhang Hong-Wei,Rong Chuan-Bing,Chen Ren-Jie and Shen Bao-Gen.Effects of grain size distribution on remanence and coercivity of Pr2Fe14B nanocrystalline magnet[J].Chinese Physics B,2005,14(5):1055-1059. |
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| Authors: | He Shu-Li Zhang Hong-Wei Rong Chuan-Bing Chen Ren-Jie and Shen Bao-Gen |
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| Institution: | State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, China; 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 |
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| 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. |
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| Keywords: | nanocrystalline magnets coercivity remanence |
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