Large magnetostriction in Fe-Ga rapid-solidified alloy

Yasubumi Furuya, Chihiro Saito, Teiko Okazaki

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Rapid-solidification method was applied to make the Fe-15 at%Ga ribbon whose thickness was about 100 μm with improvement of ductility. The Fe-15 at%Ga ribbon sample showed a very large magnetostriction of εmax = -400 × 10-6 in comparison with εmax = - 40 × 10-6 for the conventionally melt-worked bulk material at applied magnetic field, 955 kA/m. In the bulk material with random crystal orientation, the dependence of magnetostriction on magnetization direction (θ) to the surface of ribbon was scarcely recognized. On the contrary, in rapid-solidified ribbon, that dependence was extraordinarily enhanced and large magnetostriction was obtained in the thickness direction of ribbon (θ≒90°) where coercive force showed the maximum value. Based on these experimental results, it is considered that the large magnetostriction is strongly correlated with special metallic microstructures in the rapid-solidified Fe-15 at%Ga ribbon with very strong magnetic anisotropy. Fe-Ga rapid-solidified ribbon has the promising possibility as a new magnetostrictive material as it has large magnetostriction, ductility and very small magnetostriction hysteresis.

Original languageEnglish
Pages (from-to)901-904
Number of pages4
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume66
Issue number9
DOIs
Publication statusPublished - 2002 Sep
Externally publishedYes

Keywords

  • Actuator
  • Magnetic anisotropy
  • Magnetostriction
  • Rapid-solidification
  • Sensor

ASJC Scopus subject areas

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

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