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From the same journal

Large anisotropy of magnetic damping in ultrathin epitaxial Fe/GaAs (001) film

Research output: Contribution to journalArticle

Published copy (DOI)

Author(s)

  • Long Yang
  • Yu Yan
  • Yequan Chen
  • Yiyi Chen
  • Bo Liu
  • Zhendong Chen
  • Xianyang Lu
  • Jing Wu
  • Liang He
  • Xuezhong Ruan
  • Bo Liu
  • Yongbing Xu

Department/unit(s)

Publication details

JournalJournal of Physics D: Applied Physics
DateAccepted/In press - 13 Dec 2019
DatePublished (current) - 6 Jan 2020
Issue number11
Volume53
Original languageEnglish

Abstract

The magnetization dynamics of ultrathin epitaxial Fe films on GaAs (0 0 1) with different thicknesses have been investigated by all-optical time-resolved magneto-optical Kerr effect. For the Fe film with thickness of 8 monolayers, the magnetic damping constant along orientation increases by 66% compared with that along orientation, showing the uniaxial anisotropy of magnetic damping. By the measurement of angular dependent time-resolved magneto-optical Kerr effect, the uniaxial magnetic damping is clearly correlated to the in-plane uniaxial anisotropy field of the Fe film. In addition, the anisotropy of the damping constants is found to disappear for the Fe films thicker than 15 monolayers, suggesting that the anisotropic damping originates from the interfacial effect between Fe and GaAs.

Bibliographical note

© Copyright 2020 IOP Publishing. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

    Research areas

  • Anisotropic damping constant, Magnetic anisotropy field, TR-MOKE, Ultrathin film

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