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第 15 卷 第 4 期, pp.424-450  (1995) [ 27页 ]

铁基稀土永磁合金的矫顽力

高汝伟; 董建敏; 姜寿亭; 李华
山东大学物理系 济南 250100

2010/08/26 发布

本文综述了目前国内外对铁基稀土(钕铁硼)水磁合金矫顽力机制的研究状况。结合实验事实,从合金主磁性相Nd_2Fe_(14)B晶粒的结构特点、磁性参数及缺陷模型出发,分别介绍了成核机制、发动场理论、钉扎机制和热激活理论。比较了各种理论模型的异同点、成功与不足之处,指出了一些尚有争议的问题和今后的理论研究方向。
he investigations on the coercivity mechanism of Fe-based rare-earth permanentalloys are commented in this paper. Basing on the experiments and taking the structurefeature, the magnetic parameters and the defect models of the main magnetic phaseNd2Fe14B grains into cosideration,the different coercivity theories,such as the nucleatonmechanism, the pinnig mechanism, the starting field theory and the thermal activationtheory are introduced, respectively. The community and differentiation as well as thesuccesses and defects of the various theories are compared with each other. Some contro-versial questions and the emphases of further theoretical study are pointed out.

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