Phase Transitions in Novel Ferromagnetic Shape Memory Alloys Ni-Mn-Sn
|Vladimir V. Khovailo 2, V V. Koledov 2, Vladimir G. Shavrov 2, Makoto Ohtsuka 1, Toshiyuki Takagi 1|
1. Tohoku University, Sendai, Japan
Recently, it was found that for ferromagnetic Heusler alloys Ni2MnSn, Ni2MnIn, and Ni2MnSb, the deviation from stoichiometry results in appearance of martensitic transformation . For these systems, the martensitic transformation temperature decreases upon substitution of Mn for Sn, In or Sb; especially drastic decrease was observed in the NiMnIn system. The compositional dependence of the Curie temperature Tc of the austenite phase was found to be weak, while Tc of the martensite phase is strongly depended on the alloy composition and drastically decreases with decreasing In, Sn or Sb content in all the systems.
Presentation: oral at E-MRS Fall Meeting 2005, Symposium C, by Vladimir V. Khovailo
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-20 14:05 Revised: 2009-06-07 00:44