Large magnetic-field-induced strain in Co-Ni-Al single-variant ferromagnetic shape memory alloy

H. Morito, K. Oikawa, A. Fujita, K. Fukamichi, R. Kainuma, K. Ishida

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

At room temperature, Co41Ni32Al27 single-variant ferromagnetic shape memory alloy with a uniaxial magnetic anisotropy constant of -2.0 × 106 erg cm-3 exhibits a large magnetic-field-induced strain of 3.3% under a static compressive stress of about 10 MPa applied along the hard magnetization direction of the c-axis (c/a > 1). Compared with data for other alloys, it becomes clear that a small change in twinning stress in the stress-strain curve is necessary for a large strain.

Original languageEnglish
Pages (from-to)379-382
Number of pages4
JournalScripta Materialia
Volume63
Issue number4
DOIs
Publication statusPublished - 2010 Aug

Keywords

  • Co-Ni-Al alloy
  • Ferromagnetic shape memory alloy
  • Magnetic anisotropy
  • Magnetostriction

ASJC Scopus subject areas

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

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