Syntheses and magnetic properties of Nd{sub}3Co{sub}(13-x)Ni{sub}xB{sub}2 borides

Yi Chen; X. Li; J. K. LiangX. L. ChenB. G. ShenG. H. RaoQ. L. Liu

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Syntheses and magnetic properties of Nd{sub}3Co{sub}(13-x)Ni{sub}xB{sub}2 borides

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The effect of substitution of Ni for Co in the borides Nd{sub}3(Co{sub}(13-x)Ni{sub}x)B{sub}2 (x = 0, 1, 2, 3, 4, 5) on the crystal structure and magnetic properties has been investigated. The lattice parameter a decreases while c increases with increasing x in the range 0 ≤ x ≤ 5. The Curie temperature and saturation magnetic moment per formula unit in Nd{sub}3(Co{sub}(13-x)Ni{sub}x)B{sub}2 decrease monotonically as the Ni concentration increases. We have observed spin-reorientation transitions at temperatures that decrease monotonically with increasing Ni concentration. It is noteworthy that the substitution of Ni has a significant effect on the magnetocrystalline anisotropy of the Co sublattice, leading to the change of easy magnetization direction of Nd{sub}3(Co{sub}(13-x)Ni{sub}x)B{sub}2 compounds from basal plane to the c axis at room temperature when x ≥ 2. The magnetic phase diagram of the Nd{sub}3(Co{sub}(13-x)Ni{sub}x)B{sub}2 borides is given, and the behavior of magnetocrystalline anisotropy is analyzed by the single ion model.

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《IEEE Transactions on Magnetics》 |2000年第2期|2037-2041|共5页
作者
Yi Chen; X. Li; J. K. LiangX. L. ChenB. G. ShenG. H. RaoQ. L. Liu;
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正文语种英语
中图分类磁性材料、铁氧体;
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Borides; Mangetocrystalline anisotropy;

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Syntheses and magnetic properties of Nd{sub}3Co{sub}(13-x)Ni{sub}xB{sub}2 borides

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