Magnetic viscosity in Nd60Fe30Al10 amorphous alloys

被引：4
|
作者：
Billoni, OV
Villafuerte, M
Urreta, S
Fabietti, LM
机构：
[1] Univ Nacl Cordoba, Fac Math Atron & Fis, RA-5000 Cordoba, Argentina
[2] Consejo Nacl Invest Cient & Tecn, La Plata, Argentina
来源：
PHYSICA B-CONDENSED MATTER | 2002年 / 320卷 / 1-4期
关键词：
hard magnetic materials; amorphous alloys; magnetic viscosity;
D O I：
10.1016/S0921-4526(02)00717-2
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Ferromagnetic amorphous Nd60Fe30Al10 alloys melt spun at wheel speeds between 5 and 20m/s exhibit hard magnetic properties, which are found to be very sensitive to the cooling conditions. The magnetization reversion mechanisms leading to the rather high coercive forces found are investigated by thermally activated magnetic relaxation experiments; the mean fluctuation field and the activation volume are measured-in specimens cooled at different rates-at the critical field for extensive magnetization reversion. These preliminary results show a qualitative agreement with the predictions of a ferromagnetic cluster model. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：288 / 290
页数：3
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