Development of new magnetostrictive materials in heusler type CoNiGa system

Mitsutaka Sato, Teiko Okazaki, Yasubumi Furuya, Takeshi Kubota, Chihiro Saito, Manfred Wuttig

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We have developed new ferromagnetic shape memory alloys, Co2Ni2-xGax(x=1, 1.12, 1.15, 1.17), which have large strain caused by the magnetic-field-derived re-arrangement of martensite twin. The ribbon samples formed by rapidly solidified, melt-spinning methods showed strong anisotropy and large magnetostriction, ε∼180 × 10-6 at applied magnetic field, 0.8 T in low temperature. In contrast to poor ductility of the well-known ferromagnetic shape memory alloy Ni2MnGa, some of the ribbons have good ductility and are not broken even after bending to an angle of 180°.

Original languageEnglish
Pages (from-to)147-150
Number of pages4
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Issue number3
Publication statusPublished - 2002 Mar
Externally publishedYes


  • Ferromagnetic shape memory alloy
  • Heusler
  • Magnetostriction
  • Martensite
  • Rapidly solidification

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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