Study on static and high frequency magnetic properties of various thick Fe100-xGaxpolycrystalline films (x=18.5, 24.9, and 33.4)

Yasushi Endo, Yasuyuki Kawabe, Takamichi Miyazaki

Research output: Contribution to journalArticlepeer-review

Abstract

This paper describes static and high frequency magnetic properties of Fe100-xGax polycrystalline films (x = 18.5, 24.9, and 33.4) with various thickness between 5-100 nm. The saturation magnetostriction (λs) for each x become lower than those of Fe-Ga single crystal films and Fe-Ga bulk alloy regardless of the film thickness, which may be attributed to the crystalline orientation in these films. On the other hand, for every x, the relationship between the in-plane effective damping constant (α//) and the film thickness is almost same. Their values become higher than those of other Fe-binary alloy thin film with soft magnetic properties, which may be attributed to the coexistence of both intrinsic and extrinsic damping. These results suggest that the reduction of α// is one of the most important for the high-frequency device applications of Fe100-xGax polycrystalline films with various film thickness.

Original languageEnglish
Pages (from-to)118-122
Number of pages5
JournalIEEJ Transactions on Fundamentals and Materials
Volume141
Issue number2
DOIs
Publication statusPublished - 2021 Feb 1

Keywords

  • Fe-Ga thin film
  • In-plane effective damping constant
  • Saturation magnetostriction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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