Temperature stability of martensite and magnetic field induced strain in Ni-Mn-Ga

被引：50

作者：

Glavatska, N ^{[1
]}

Mogylny, G ^{[1
]}

Glavatskiy, I ^{[1
]}

Gavriljuk, V ^{[1
]}

机构：

[1] Ukrainian Acad Sci, Inst Met Phys, UA-03680 Kiev 142, Ukraine

来源：

SCRIPTA MATERIALIA | 2002年 / 46卷 / 08期

关键词：

magnetic shape memory-; Ni2MnGa; martensite; crystal structure; thermal properties;

D O I：

10.1016/S1359-6462(02)00019-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

in single crystal Ni2MnGa that exhibits 4.6% magnetic field induced strain (MFIS) at 291 K, it is found that the effect lacks thermal stability. As the temperature rises, the MFIS decreases concomitantly with the lattice distortion. At the same time, the critical magnetic field necessary to activate twin boundary motion falls. A new intermediate martensitic phase is observed. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：605 / 610

页数：6

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