Studies of thermal and magnetic properties of Fe-based amorphous and nanocrystalline glass coated microwires

被引：5
|
作者：
Churyukanova, M. [1 ]
Zhukova, V. [2 ]
Talaat, A. [2 ]
del Val, J. J. [2 ]
Kaloshkin, S. [1 ]
Kostitcyna, E. [1 ]
Shuvaeva, E. [1 ]
Sudarchikova, V. [1 ]
Zhukov, A. [2 ,3 ]
机构：
[1] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia
[2] Univ Basque Country, Dept Fis Mat, San Sebastian, Spain
[3] Basque Fdn Sci, Ikerbasque, Bilbao, Spain
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 615卷
关键词：
Glass-coated amorphous microwire; Curie temperature; Heat capacity; Nanocrystallization; Giant Magnetoimpedance effect; Magnetoelastic energy; GIANT MAGNETOIMPEDANCE; MAGNETOSTRICTION;
D O I：
10.1016/j.jallcom.2013.12.030
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We studied the influence of magnetoelastic energy on properties of nanostructured glass-coated microwires with soft magnetic behaviour (Finemet-type microwires of Fe70.8Cu1Nb3.1Si14.5B10.6 and Fe73.8Cu1Nb3.1Si13B9.1 compositions). The magnetoelastic energy, stored during the Finemet-type microwires fabrication, affected the hysteresis loops, coercivity and heat capacity of Finemet-type microwires. Hysteresis loops of all as-prepared microwires showed rectangular shape, typical for Fe-rich microwires. As expected, coercivity, H-c, of as-prepared microwires increases with decreasing of the ratio rho defined as the ratio between the metallic nucleus-diameter, d to total microwire diameter, D. On the other hand, the change of heat capacity in T-c, Delta Cp, exhibits increasing with the ratio rho. This relationship holds for microwires in the as-prepared state as well as after annealing. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：S256 / S260
页数：5
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