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The European Physical Journal B

, Volume 67, Issue 2, pp 193–196 | Cite as

Martensitic transition and inverse magnetocaloric effect in Co doping Ni–Mn–Sn Heulser alloy

  • C. Jing
  • Z. Li
  • H. L. Zhang
  • J. P. Chen
  • Y. F. Qiao
  • S. X. Cao
  • J. C. Zhang
Solid State and Materials

Abstract

We presented the martensitic transition and magnetocaloric effect of the substituted Heulser alloy Ni50-xCoxMn38Sn12 (x = 2, 4, and 6). A large magnetic entropy change of 37.1 J/kg K above room temperature for a magnetic field change of 50 kOe is obtained in Ni48Co2Mn38Sn12 alloy. With the increase of Co concentration, the martensitic transition shifts to lower temperature and the magnetic entropy change decreases. This behavior could be ascribed by the fact that the FM exchange coupling is enhanced much more with increasing Co content.

PACS

81.30.kf Martensitic transformations 75.30.Sg Magnetocaloric effect, magnetic cooling 75.50.Cc Other ferromagnetic metals and alloys 75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • C. Jing
    • 1
  • Z. Li
    • 1
  • H. L. Zhang
    • 1
  • J. P. Chen
    • 1
  • Y. F. Qiao
    • 1
  • S. X. Cao
    • 1
  • J. C. Zhang
    • 1
  1. 1.Department of PhysicsShanghai UniversityShanghaiP.R. China

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