Low-temperature magnetization of amorphous and nanocrystalline Fe76.5-xUxCu1Si13.5B9 alloys

被引：6

作者：

Dusa, O ^{[1
]}

Kovac, J ^{[1
]}

Konc, M ^{[1
]}

Svec, T ^{[1
]}

Kavecansky, V ^{[1
]}

机构：

[1] SLOVAK ACAD SCI,INST EXPTL PHYS,KOSICE 04353,SLOVAKIA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 154卷 / 01期

关键词：

D O I：

10.1016/0304-8853(95)00573-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The low-temperature magnetization of amorphous and nanocrystalline Fe76.5-xUxCu1Si13.5B9 alloys (x = 0-11) has been studied in the 4.2-300 K range. All examined magnetic parameters (exchange integral J, range of exchange interactions [r(2)], magnetic moment per Fe atom, mu(Fe), spin wave stiffness constant D) are markedly influenced by the uranium substitution for iron. Both the mu(Fe) and D are found to increase with decreasing Fe content in amorphous alloys for x = 0 up to about 4. The noncollinear spin structures as a result of competing interactions are supposed to explain this behaviour. Some samples (with U contents of 2-6 at%) annealed for 1 h at 813 K appear to be nanocrystalline. Uranium seems to inhibit grain growth in the investigated FeUCuSiB system, just as Nb does in FeNbCuSiB nanocrystalline alloys.

引用

页码：54 / 58

页数：5

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