Effect of post-annealing on the phase transitions and magnetocaloric properties in bulk Ni44Mn45Sn11 alloy

被引：8

作者：

Wang, R. L. ^{[1
]}

Xu, L. S. ^{[1
]}

Xiao, H. B. ^{[1
]}

Xu, L. F. ^{[1
]}

Zhang, J. X. ^{[2
]}

Chen, R. J. ^{[3
,4
]}

Guo, S. ^{[3
,4
]}

Yang, C. P. ^{[1
]}

机构：

[1] Hubei Univ, Fac Phys & Elect Technol, Wuhan 430062, Peoples R China

[2] CNRS, Inst Chem & Met Paris Est, F-94320 Thiaias, France

[3] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China

[4] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Zhejiang, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 17期

关键词：

SHAPE-MEMORY ALLOYS; MN-SN ALLOYS; MARTENSITIC-TRANSFORMATION; ATOMIC ORDER; RIBBONS;

D O I：

10.1063/1.4795741

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of low temperature post-annealing on the phase transitions and magnetocaloric properties in bulk Ni44Mn45Sn11 alloy has been investigated. The results indicate that with the increase of annealing temperature, the martensite start temperature decreases rapidly, while the Curie temperature of austenitic phase shows a small decrease. The variations of phase transition temperatures can be attributed to the decrease of atomic order degree characterized by the increases of cell volume. Although the peak value of magnetic entropy change decreases rapidly, the refrigerant capacity shows a slight increase at the annealing temperature <= 300 degrees C due to the wider peaks. (C) 2013 American Institute of Physics.

引用

页数：3

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