Magnetoresistance and magnetocaloric effect in metamagnetic alloys Ni45Co5Mn36.5In13.5

被引：24

作者：

Chen, L. ^{[1
,2
]}

Hu, F. X. ^{[1
]}

Wang, J. ^{[1
]}

Shen, J. ^{[1
]}

Zhang, J. ^{[1
,3
]}

Sun, J. R. ^{[1
]}

Shen, B. G. ^{[1
]}

Yin, J. H. ^{[2
]}

Pan, L. Q. ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China

[2] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China

[3] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 09期

关键词：

INDUCED PHASE-TRANSFORMATION; MAGNETIC ENTROPY CHANGE; GIANT MAGNETORESISTANCE; FIELD; TRANSITION; MECHANISM;

D O I：

10.1063/1.3359806

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetoresistance (MR) and magnetocaloric effect around martensitic transformation were investigated in a Ni45Co5Mn36.5In13.5 alloy. The martensitic temperature (T-M) locates at similar to 260 K. An external magnetic field can drive T-M to a lower temperature at a rate of similar to 9.2 K/T. Associated with the field-induced metamagnetic behaviors, a large MR takes place. The maximal MR exceeds 80% under a field of 5 T around 235 K. More attractive is that the MR behavior is fully recoverable against magnetic field. We also studied the magnetocaloric effect associated with the martensitic transformation and found a large magnetic entropy change (Delta S) around 252 K. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3359806]

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