Magnetoresistance origin in martensitic and austenitic phases of Ni2Mn1+xSn1-x

被引：25
|
作者：
Singh, Sandeep [1 ]
Biswas, C. [1 ]
机构：
[1] SN Bose Natl Ctr Basic Sci, Dept Mat Sci, Kolkata 700098, W Bengal, India
来源：
APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 21期
关键词：
SHAPE-MEMORY ALLOY; TRANSFORMATION;
D O I：
10.1063/1.3592853
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetoresistance (MR) of Ni2Mn1+xSn1-x (0.40 <= x <= 0.52) is studied as functions of temperature and magnetic field in austenitic and martensitic phases. The maximum MR obtained is -36% (x = 0.4) at 170 K with 7 T magnetic field during martensitic transition. The MR in the martensitic phase (maximum -2.2%) is less than that in austenitic phase (maximum -4.6%). The origin of less MR below and above martensitic transition is understood through the experimental data fitting with magnetic field dependence (H-n) of MR. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3592853]
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