Shape memory behavior of Ni-Mn-Ga sputtered films under a magnetic field

Makoto Ohtsuka, Masaki Sanada, Minoru Matsumoto, Toshiyuki Takagi, Kimio Itagaki

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The shape memory behavior under the magnetic field up to 5 T was observed in Ni-Mn-Ga sputtered films. The sputtered films were heat-treated at 1073 K for 36 ks for homogenization and aged at 673 K for 14.4 and 56.7 ks in a constraint condition. The martensitic transformation temperatures and Curie temperature of the obtained films were higher than room temperature. The martensitic transformation temperatures increased under a magnetic field. Furthermore, a shape memory effect was observed by increasing and decreasing of the magnetic field.

Original languageEnglish
Pages (from-to)2513-2519
Number of pages7
JournalMaterials Transactions
Volume44
Issue number12
DOIs
Publication statusPublished - 2003 Dec

Keywords

  • Constraint-aging
  • Ferromagnetic shape memory alloy
  • Magnetic field
  • Nickel-manganese-gallium
  • Shape memory effect
  • Sputter deposition

ASJC Scopus subject areas

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

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