Rare-earth transition metal compounds: Exchange interactions and transition metal moments

被引：0

作者：

Burzo, E ^{[1
]}

Chioncel, L

机构：

[1] Univ Babes Bolyai, Fac Phys, Cluj Napoca 400084, Romania

[2] Univ Nijmegen, Dept Phys, NL-6500 GL Nijmegen, Netherlands

来源：

JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2004年 / 6卷 / 03期

关键词：

rare-earth metal compound; Gd-Co-Ni; Gd-Y-Co; Y-Co-Ni-B; Gd-Y-Ni; exchange interactions; transition metal moment; band structure; magnetic measurements;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic measurements and band structure calculations were performed on Gd(CoxNi1-x)(2), Gd(CoxAl1-x)(2), (GdxY1-x)Co-2, YCo4-xNixB and (GdxY1-x)Ni-5 compounds. The band structure calculations performed on Gd(CoxNi1-x)(2) system show that the cobalt moments are little dependent on composition. The critical fields for the appearance of induced cobalt and nickel moments were determined. The R5d band polarizations in R-Co and R-Ni compounds where R is a magnetic rare-earth are the result of both local 4d-5d and 5d-3d short range exchange interactions. Both 5d and 4d band polarizations resulting from short range interactions show a linear dependence on the magnetizations of nearest neighbour transition metals atoms.

引用

页码：917 / 924

页数：8

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