Stress-induced resistivity changes in a Ni-Mn-In alloy
Stress-induced resistivity changes in a Ni-Mn-In alloy
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DOI：
10.1063/1.4917016
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发表时间：
2015-04
影响因子：
4
通讯作者：
V. Kokorin;S. Konoplyuk;A. Dalinger;S. E. Thürer;G. Gerstein;H. Maier
中科院分区：
文献类型：
--
作者：
V. Kokorin;S. Konoplyuk;A. Dalinger;S. E. Thürer;G. Gerstein;H. Maier
据报道，多晶 Ni45.4Mn40In14.6 变磁合金在单轴压缩时存在弹阻效应：当施加的机械应力达到 16 MPa 时，电阻突然增长超过 30%。在马氏体转变温度以上23 K的变形过程中，该合金表现出超弹性行为。通过光学显微镜原位监测不同应变水平下样品的表面形态。观察结果表明，压缩变形达 5% 后，卸载样品完全恢复到母相。
The elastoresistive effect is reported in polycrystalline Ni45.4Mn40In14.6 metamagnetic alloy at uniaxial compression: abrupt growth of electric resistance by more than 30% occurs when the applied mechanical stress achieves 16 MPa. In the process of deformation at temperature 23 K above martensitic transition, the alloy demonstrated superelastic behavior. Surface morphology of specimen at different strain levels was monitored in situ by optical microscopy. The observations showed that after compressive deformation up to 5% followed by unloading specimen fully reverted back to parent phase.