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Martensitic transformation and magnetocaloric effect in Ni43Mn42Co4Sn11 alloy

FENGHUA CHEN1, CHANGWEI GONG2, YANPING GUO2, MINGANG ZHANG2,* , YUESHENG CHAI2, JIAN WEI1

Affiliation

  1. Department of Physics, School of Applied Science, TaiYuan University of Science and Technology, Taiyuan 030024, China
  2. College of Materials Science and Engineering, TaiYuan University of Science and Technology, Taiyuan 030024, China

Abstract

The crystal structure and phase transition in Heusler alloys were investigated by means of structure analysis and magnetism measurements. The result shows that the Ni43Mn42Co4Sn11 alloy have a large magnetic entropy change of 40.0 J/kg K at the temperature about 255 K under a magnetic field changing from 0 to 30 kOe. The refrigerant capacity values of the first-order and second-order phase transition under an applied field changing from 0 to 30 kOe are also discussed. The different external magnetic field influence on the phase transition temperature of about 3-4 K, ranged to the low temperature..

Keywords

Ni–Mn–Sn, Heusler alloy, Martensitic transition, Magnetocaloric effect.

Citation

FENGHUA CHEN, CHANGWEI GONG, YANPING GUO, MINGANG ZHANG, YUESHENG CHAI, JIAN WEI, Martensitic transformation and magnetocaloric effect in Ni43Mn42Co4Sn11 alloy, Optoelectronics and Advanced Materials - Rapid Communications, 8, 1-2, January-February 2014, pp.26-29 (2014).

Submitted at: Feb. 4, 2013

Accepted at: Jan. 22, 2014