論文

2017年10月

Nonlinear electric field effect on perpendicular magnetic anisotropy in Fe/MgO interfaces

JOURNAL OF PHYSICS D-APPLIED PHYSICS
  • Qingyi Xiang
  • ,
  • Zhenchao Wen
  • ,
  • Hiroaki Sukegawa
  • ,
  • Shinya Kasai
  • ,
  • Takeshi Seki
  • ,
  • Takahide Kubota
  • ,
  • Koki Takanashi
  • ,
  • Seiji Mitani

50
40
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1088/1361-6463/aa87ab
出版者・発行元
IOP PUBLISHING LTD

The electric field effect on magnetic anisotropy was studied in an ultrathin Fe(001) monocrystalline layer sandwiched between Cr buffer and MgO tunnel barrier layers, mainly through post-annealing temperature and measurement temperature dependences. A large coefficient of the electric field effect of more than 200 fJ (Vm)(-1) was observed in the negative range of electric field, as well as an areal energy density of perpendicular magnetic anisotropy (PMA) of around 600 mu J m(-2). More interestingly, nonlinear behavior, giving rise to a local minimum around + 100 mV nm(-1), was observed in the electric field dependence of magnetic anisotropy, being independent of the post-annealing and measurement temperatures. The insensitivity to both the interface conditions and the temperature of the system suggests that the nonlinear behavior is attributed to an intrinsic origin such as an inherent electronic structure in the Fe/MgO interface. The present study can contribute to the progress in theoretical studies, such as ab initio calculations, on the mechanism of the electric field effect on PMA.

Web of Science ® 被引用回数 : 17

リンク情報
DOI
https://doi.org/10.1088/1361-6463/aa87ab
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000410755200001&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85029897108&origin=inward
ID情報
  • DOI : 10.1088/1361-6463/aa87ab
  • ISSN : 0022-3727
  • eISSN : 1361-6463
  • SCOPUS ID : 85029897108
  • Web of Science ID : WOS:000410755200001

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