Observation of field-induced reverse transformation in ferromagnetic shape memory alloy Ni50Mn36Sn14

Keiichi Koyama, Kazuo Watanabe, Takeshi Kanomata, Ryosuke Kainuma, Katsunari Oikawa, Kiyohito Ishida

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181 Citations (Scopus)

Abstract

The structural and magnetic properties of the ferromagnetic Heusler alloy Ni50 Mn36 Sn14 were studied by magnetization and x-ray powder diffraction measurements in fields up to 5 T. The alloy undergoes the martensitic transformation from the L 21 -type cubic structure with the lattice parameter ac =0.5988 nm into an orthorhombic structure with the lattice parameters ao =0.8617 nm, bo =0.5702 nm and co =0.4359 nm at Ms =220 K with a thermal hysteresis of 40 K. The cell volume contracts by 0.37% and the magnetic moment decreases by 50% at Ms. Furthermore, we directly observed the field-induced reverse martensitic transformation.

Original languageEnglish
Article number132505
JournalApplied Physics Letters
Volume88
Issue number13
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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