Correlation between saturation magnetostriction and damping constant in (Ni-Fe)1-xMx (M=Pt, Au, Pd, and Cr) films

Yasushi Endo, Yoshio Mitsuzuka, Kohei Okawa, Yutaka Shimada, Masahiro Yamaguchi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This paper describes our experimental investigation on a correlation between saturation magnetostriction and damping constant in 50-nm-thick (Ni-Fe)1-xMx (M=Pt, Au, Pd, and Cr; 0 < x < 0.12) films. The change in a with x is closely related with that of λs for every M: when M=Pt, Au, and Pd, a decreases almost monotonically with increasing λs, while it increases in (Ni-Fe)1-xCrx films. These results give clear evidence that a correlates with λs in (Ni-Fe)1-xM x films. These results also reveal that a can be controlled effectively by transition metal dopants. In addition, it should be pointed out that when adjusting a of magnetically soft films, particular attention must be paid to considerable change of magnetoelastic properties that leads to deterioration of magnetic softness.

Original languageEnglish
Article number6027620
Pages (from-to)3324-3327
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
Publication statusPublished - 2011 Oct 1

Keywords

  • Coplanar waveguide (CPW) FMR
  • Ni-Fe film
  • damping constant
  • saturation magnetostriction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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