Evaluation valuation of Anisotropy Field and g-factor of c-plane Oriented CoPtCr Alloy Film Using Q-band Ferromagnetic Resonance

DOI Web Site 7 Citations 11 References
  • Hinata Shintaro
    Department of Electronic Engineering, Graduate School of Engineering, Tohoku University
  • Saito Shin
    Department of Electronic Engineering, Graduate School of Engineering, Tohoku University
  • Takahashi Migaku
    Department of Electronic Engineering, Graduate School of Engineering, Tohoku University

Bibliographic Information

Other Title
  • Ｑバンド強磁性共鳴を用いたｃ面配向ＣｏＰｔＣｒ合金薄膜の異方性磁界およびｇ因子の評価
  • Qバンド キョウジセイ キョウメイ オ モチイタ cメンハイコウ CoPtCr ゴウキン ハクマク ノ イホウセイ ジカイ オヨビ g インシ ノ ヒョウカ

Search this article

Abstract

  The uniaxial magnetic anisotropy field, Hk, and g-factor of a c-plane oriented CoPtCr alloy film was quantitatively evaluated by using Q-band (∼34 GHz) ferromagnetic resonance (FMR). An FMR signal with a high signal-to-noise ratio was successfully obtained by using a 2mmφ-Macor holder, which achieves phase matching, a decrease in the background of the signal, and accurate alignment of the external field parallel to the film normal or in-plane. An external field was applied perpendicularly or horizontally to the film, and a single magnetic domain was maintained during the measurements. The measured FMR signals demonstrated that 1) the Hk and g-factor were simultaneously derived for CoPtCr films with Co 75-90 at.%, 2) the magnitude of Hk was supported by that obtained with a Torque magnetometer, and 3) the g-factor increased from 2.11 to 2.19 when Co content was decreased from 85 to 65 at.% and the Cr content was increased from 5 to 20 at.%.

Journal

Citations (7)*help

See more

References(11)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top