Magnetoelastic hysteresis in 5 M NiMnGa single crystals

被引：11
|
作者：
Bechtold, Christoph [3 ]
Gerber, Andreas [3 ]
Wuttig, Manfred [2 ]
Quandt, Eckhard [1 ]
机构：
[1] Univ Kiel, Chair Inorgan Funct Mat, D-24143 Kiel, Germany
[2] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
[3] Res Ctr Caesar, D-53175 Bonn, Germany
来源：
SCRIPTA MATERIALIA | 2008年 / 58卷 / 11期
基金：
美国国家科学基金会;
关键词：
magnetostriction; shape memory alloys (SMA); twin boundary movement; Heusler phases;
D O I：
10.1016/j.scriptamat.2008.01.035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The magnetic field induced strain (MFIS) in a five-layered NiMnGa single crystal was investigated. Without compressive load, a maximum strain of 5.5% was measured. The hysteresis of the magnetoelastic strain was further characterized by biased minor loops at decreasing magnetic field amplitudes. In contrast to Joule magnetostrictors, the hysteresis widths were found to be independent of the field amplitude which results in a threshold field identical to the hysteresis width for any MFIS. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1022 / 1024
页数：3
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