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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Martensitic Transformation and Inverse Magnetocaloric Effect in Ni45Co5Mn37In13 Heusler Alloy
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1131-1134)
Author(s): Dong-hua Yu, Department of Physics, Shanghai University, Shanghai 200444 China
Chao Jing, Department of Physics, Shanghai University, Shanghai 200444 China
Zhe Li, Department of Physics, Shanghai University, Shanghai 200444 China
Hao-lei Zhang, Department of Physics, Shanghai University, Shanghai 200444 China
Shi-xun Cao, Department of Physics, Shanghai University, Shanghai 200444 China
Jin-cang Zhang, Department of Physics, Shanghai University, Shanghai 200444 China
Abstract: The martensitic transition and magnetocaloric effect in Ni45Co5Mn37In13 Heusler alloy has been investigated by magnetic measurements. It is observed that the sample undergoes martensitic transition from pure ferromagnetic state to antiferromagnetic state, resulting in a large difference in magnetization between parent and martensitic phases. On this basis, the magnetocaloric effect during reverse martensitic transition is evaluated through Maxwell relation. It is found that the sample show the maximum magnetic entropy with the value of about 30 J/kg K in the temperature span of 15 K, exhibiting a potential ability as magnetic refrigerator materials.
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