Evaluation of spin-orbit torque in a L10-FePt single layer and a L10-FePt/Pt bilayer

Takumi Sato, Takeshi Seki, Makoto Kohda, Jeongchun Ryu, Hiromu Gamou, Shutaro Karube, Koki Takanashi, Junsaku Nitta

Research output: Contribution to journalArticle

Abstract

We investigated the spin-orbit torque (SOT) in a L10-FePt single layer and a L10-FePt/Pt bilayer by measuring the harmonic Hall voltages, where the L10-FePt layers exhibited perpendicular magnetization. The harmonic signals for the L10-FePt single layer did not depend on applied electric voltage, suggesting the negligible self-induced SOT in the FePt. In the case of a L10-FePt/Pt bilayer, on the other hand, SOT from the Pt layer exerted on the FePt magnetization. We found that the longitudinal effective field is dominant whereas the transverse effective field is significantly small for the present L10-FePt/Pt bilayer.

Original languageEnglish
Article number060915
JournalJapanese journal of applied physics
Volume58
Issue number6
DOIs
Publication statusPublished - 2019 Jan 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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