論文

査読有り
2014年11月

Spin reorientation and large magnetic anisotropy of metastable bcc Co islands on Au(001)

PHYSICAL REVIEW B
  • T. Miyamachi
  • T. Kawagoe
  • S. Imada
  • M. Tsunekawa
  • H. Fujiwara
  • M. Geshi
  • A. Sekiyama
  • K. Fukumoto
  • F. H. Chang
  • H. J. Lin
  • F. Kronast
  • H. Duerr
  • C. T. Chen
  • S. Suga
  • 全て表示

90
17
開始ページ
174410
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.90.174410
出版者・発行元
AMER PHYSICAL SOC

We studied magnetism and morphology of metastable bcc Co nanostructures on Au(001) by x-ray magnetic circular dichroism in combination with scanning tunneling microscopy and photoelectron emission microscopy. While room-temperature deposition of Co onto Au(001) leads to the formation of bcc Co thin films with pure in-plane magnetization, postannealing of these thin films at 500 K drastically changes the morphology to bcc Co islands embedded in Au. In accordance with this morphological change, we find that an out-of-plane magnetization emerges additionally and the coexistence of in-plane and out-of-plane remanent magnetizations is observed for the islands. The nanostructure-size dependence of magnetic moments suggests that the magnetization easy axis of the island changes from the in-plane to the out-of-plane direction with decreasing nanostructure size. Such a spin reorientation transition is likely due to the increased fractional population of rim atoms generating the out-of-plane magnetization in the smaller islands. The observed out-of-plane remanent magnetization of the smaller islands indicates their large magnetic anisotropy.

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.90.174410
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000345465000002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevB.90.174410
  • ISSN : 1098-0121
  • eISSN : 1550-235X
  • Web of Science ID : WOS:000345465000002

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