Exchange springs in YFe2 dominated DyFe2-YFe2 superlattices

被引：3
|
作者：
Beaujour, JML
Bowden, GJ [1 ]
Gordeev, S
de Groot, PAJ
Rainford, BD
Ward, RCC
Wells, MR
机构：
[1] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
[2] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷 / PART II期
基金：
英国工程与自然科学研究理事会;
关键词：
magnetic superlattices; MBE; exchange-spring magnets;
D O I：
10.1016/S0304-8853(00)01136-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
MBE methods have been used to grow single-crystal Laves-phase DyFe2-YFe2 superlattice samples with a (1 1 0) growth direction. In this paper, magnetisation curves for the YFe2 dominated multilayer samples [wDyFe(2)/4wYFe(2)] x N, where w = 20, 30, 40, and 50 Angstrom, and N = 40, 27, 20, and 16, respectively, are presented and discussed. It will be shown that the measured M-H loops are dominated by magnetic exchange springs, which reduce the magnetic coercivity, considerably. In particular, it is possible to engineer samples with a negative coercivity. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1870 / 1872
页数：3
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