Microstructures and magnetic properties of rapidly solidified CoNiGa ferromagnetic shape memory alloys

Yoichi Kishi, Corneliu Craciunescu, Mitsutaka Sato, Teiko Okazaki, Yasubumi Furuya, Manfred Wuttig

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

The transformation characteristics of CoNiGa ribbons resemble those of bulk alloys. However, the transformation temperatures in the ribbons are higher than those of the bulk suggesting stress-induced martensites. TEM observations reveal arch typical twins and precursor tweed structures. The twins can be wavy suggesting a small boundary energy.

Original languageEnglish
Pages (from-to)L186-L191
JournalJournal of Magnetism and Magnetic Materials
Volume262
Issue number2
DOIs
Publication statusPublished - 2003 Jun
Externally publishedYes

Keywords

  • Heusler alloy
  • Martensitic transformation
  • Melt-spinning
  • Phase transformation
  • Transmission electron microscopy
  • Tweed contrast
  • Twinning

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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