Magnetic study of amorphous Fe91-xYxZr9 alloys

被引：8
作者：
Fettach, M
Hassini, A
Hamdoun, A
Driouch, L
机构：
[1] Univ Hassan II Mohammedia, Fac Sci Ben Msik, Lab Traitement Informat, Casablanca, Morocco
[2] Univ Hassan II Mohammedia, Fac Sci Ain Chock, Lab Phys Mat & Microelect, Casablanca, Morocco
来源：
PHYSICA B-CONDENSED MATTER | 2003年 / 325卷 / 1-4期
关键词：
amorphous alloys; substitution effect; magnetization; spin wave stiffness constant; random anisotropy;
D O I：
10.1016/S0921-4526(02)01525-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Amorphous Fe91-xYxZr9 alloys (x = 0, 5, 8 and 10) have been prepared by the melt-spinning method and their magnetic properties have been studied. The thermomagnetization curve is found to obey the Bloch law, M(T) M(0)(1 - BP3/2); magnetic moment of the Fe, spin wave stiffness constant D and exchange constant A were calculated from the experimental results. The D derived is composition dependent and increases with increasing Y contents. From an analysis of the approach to saturation in magnetization, the local random anisotropy constant K-L has been extracted. It is found that K-L decreases with increasing Y concentration. This result suggests that the substitution of Fe with Y seems to favor the increase of magnetic order by reducing the randoin anisotropy. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：203 / 207
页数：5
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