Tailoring of magnetic properties of Heusler-type glass-coated microwires by annealing

被引：18
|
作者：
Zhukov, A. [1 ,2 ,3 ]
Ipatov, M. [1 ,2 ]
del Val, J. J. [1 ]
Churyukanova, M. [4 ]
Zhukova, V. [1 ,2 ]
机构：
[1] Univ Basque Country, Dept Fis Mater, San Sebastian 20009, Spain
[2] Univ Basque Country, Dept Fis Aplicada, EUPDS, San Sebastian 20018, Spain
[3] Basque Fdn Sci, Ikerbasque, Bilbao 48011, Spain
[4] Natl Univ Sci & Technol, MISIS, Moscow 119049, Russia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 732卷
基金：
俄罗斯基础研究基金会;
关键词：
Heusler alloys; Magnetic shape memory effect; Glass-coated microwires; SHAPE-MEMORY ALLOY; MN-GA ALLOYS; FERROMAGNETIC-RESONANCE; TEMPERATURE; COERCIVITY; BEHAVIOR; PHASE;
D O I：
10.1016/j.jallcom.2017.10.232
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：
As-prepared and annealed Heusler-type NiMnGa glass-covered microwires present considerable dependence of magnetization on magnetic field values attributed to the magnetic and atomic disorder. We observed that annealing conditions strongly affect structure, temperature dependence of magnetization and Curie temperature of microwires. After annealing a magnetic phase transition is observed at about 270-300 K which is beneficial for magnetic solid state refrigeration. Exchange bias effect, enhanced coercivity values at low temperature and features that can be attributed to coexistence of two magnetic phases are observed after long annealing of NiMnGa glass-covered microwires. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：561 / 566
页数：6
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