Effects of partial substitution of Co on magnetocrystalline anisotropy and magnetic-field-induced strain in NiFeGa alloys

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

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

The effects of partial substitution of Co on magnetocrystalline anisotropy and magnetic-field-induced strain (MFIS) in Ni-Fe-Ga alloys have been investigated. To obtain a single-variant state in the martensite phase, uniaxial compressive stresses were applied to the single-crystalline specimen. The Curie temperature T C is increased up to 405 K by a partial substitution of 6 at% Co. The single-variant martensite phase in the Ni 49Fe 18Ga 27Co 6 alloy exhibits a large value of magnetocrystalline anisotropy constant K=1.2×106erg/cm3 at 300 K. Furthermore, the magnitude of the MFIS is enhanced in a wide range of temperature. Therefore, the increase of T C by the substitution of Co effectively improves the MFIS.

Original languageEnglish
Pages (from-to)850-853
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume290-291 PART 2
DOIs
Publication statusPublished - 2005 Apr

Keywords

  • Anisotropy - magnetocrystalline
  • Curie temperature
  • Magnetostriction
  • Phase transition - martensitic-like

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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