Mechanically induced demagnetization and remanent magnetization rotation in Ni-Mn-Ga (-B) magnetic shape memory alloy

被引：13
|
作者：
Straka, L. [1 ]
Soroka, A. [2 ]
Heczko, O. [3 ]
Hanninen, H. [1 ]
Sozinov, A. [2 ]
机构：
[1] Aalto Univ, Sch Engn, Lab Engn Mat, FIN-00076 Aalto, Finland
[2] AdaptaMat Ltd, FIN-00390 Helsinki, Finland
[3] ASCR, Inst Phys, Prague 18202, Czech Republic
来源：
SCRIPTA MATERIALIA | 2014年 / 87卷
基金：
芬兰科学院;
关键词：
Heusler phases; Ferromagnetic shape memory; Magnetic properties; Coercivity;
D O I：
10.1016/j.scriptamat.2014.05.017
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Boron doping increased the magnetic coercivity from 1.5 to 22 kA m(-1) (19 to 276 Oe) in Ni-50 Mn28.5Ga21.5 single crystals, which in combination with the multiferroic character of the material resulted in interesting new magnetomechanical effects. The material behaved as a semi-hard ferromagnet, which-in contrast to conventional ferromagnets-could be demagnetized by applying light (2 MPa) mechanical loading. We envisage that remanent magnetization rotation by magnetic field or by mechanical stress can occur if the hysteresis is further enlarged. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：25 / 28
页数：4
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