Dopant effects on martensitic transition and magnetic properties of Ni51.5Mn25Ga23.5 materials

Zhi Yong Zhu*, Wen Quan Wang, Yuan Hua Miao, Yan Song Wang, Li Jie Chen, Xue Fang Dai, Guo Dong Liu, Jing Lan Chen, Guang Heng Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Ni51.5Mn23M2Ga23.5 materials are to reveal the dopant effect on the martensitic transition and the magnetic properties. We found that the dopants Ti, Zr, Hf, V, Nb, and Ta lower the martensitic transition temperature of the sample, but W increases it. The martensitic transition temperature is very sensitive to the atomic size when the valence electronic concentration keeps constant for the doping elements. The dopants Ti, Zr, Hf or V decrease the magnetic moment of Mn atom in the martensite at low temperature, while Nb, Ta or W enhance it. A corresponding variation of Tc of the materials is not observed, which indicates that the influence of the lattice change of martensitic transition on the magnetic properties should also be talken into account.

Original languageEnglish (US)
Pages (from-to)4894-4897
Number of pages4
JournalWuli Xuebao/Acta Physica Sinica
Volume54
Issue number10
StatePublished - Oct 2005
Externally publishedYes

Keywords

  • Dopant
  • Magnetism
  • Martensitic transformation
  • NiMnGa

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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