Observation of reverse transformation in metamagnetic shape memory alloy Ni40Co10Mn34Al16by high-field X-ray diffraction measurements

Yoshifuru Mitsui, Keiichi Koyama, Wataru Ito, Rie Y. Umetsu, Ryosuke Kainuma, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The structural properties of metamagnetic shape memory alloy Ni 40Co10Mn34Al16 were investigated by X-ray powder diffraction measurements in the temperature range from 283 to 473 K and magnetic fields up to 5 T. With increasing temperature from 283 K, the alloy undergoes the reverse martensitic transformation from the tetragonal Ll0-type structure with the lattice parameter at = 0.3853 nm and ct = 0.3299 nm into the B2-type cubic structure with the lattice parameter ac = 0.2924 nm at As = 383 K. At 408 K (>As), we directly observed the field-induced reverse martensitic transformation.

Original languageEnglish
Pages (from-to)1648-1650
Number of pages3
JournalMaterials Transactions
Volume51
Issue number9
DOIs
Publication statusPublished - 2010 Sep

Keywords

  • Ferromagnetic shape memory alloy
  • Field-induce reverse martensitic transformation
  • High field x-ray diffraction measurements

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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