| 立方晶体铁磁各向异性的自旋波理论 |
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| 引用本文： | 邝宇平,翁世浚. 立方晶体铁磁各向异性的自旋波理论[J]. 物理学报, 1964, 20(9): 890-908 |
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| 作者姓名： | 邝宇平 翁世浚 |
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| 作者单位： | 兰州大学物理系;华东师范大学物理系 |
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| 摘 要： | 本文研究了金属极性模型理论中立方铁磁体的d电子之间各向异性相互作用的可能形式,并根据Dyson的自旋波相互作用理论用统计微扰论的方法计算了它们对磁各向异性常数K1(T)的贡献。计算进行到T4的项,在计算中保留到各向异性作用常数的一次方。所得到的K1(T)的温度依赖关系,在理论适用的温度范围内,基本上正比于自发磁化强度的10次方。
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| 收稿时间： | 1963-07-17 |
THE SPIN WAVE THEORY OF FERROMAGNETIC ANISOTROPY IN CUBIC CRYSTALS |
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| KUANG YU-PING and WENG SHI-CHUN. THE SPIN WAVE THEORY OF FERROMAGNETIC ANISOTROPY IN CUBIC CRYSTALS[J]. Acta Physica Sinica, 1964, 20(9): 890-908 |
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| Authors: | KUANG YU-PING and WENG SHI-CHUN |
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| Abstract: | The possible forms of the anisotropic interactions between d electrons in cubic ferro-magnets in the theory of the polar model of metals are studied. Their contributions to the magnetic anisotropic constant K1(T) are calculated based on Dyson's theory of spin wave interactions with the method of the statistical perturbation theory. The accuracy of the calculation is restricted to the first order of the coupling constants of anisotropic interactions, and the results are given up to the T4 terms. It is shown that K1(T) varies roughly as the tenth power of the spontaneous magnetization in the temperature range where the theory is reasonable. |
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