論文

査読有り
2018年3月

Direct Determination of Atomic Structure and Magnetic Coupling of Magnetite Twin Boundaries

ACS NANO
  • Chunlin Chen
  • ,
  • Hongping Li
  • ,
  • Takehito Seki
  • ,
  • Deolian Yin
  • ,
  • Gabriel Sanchez-Santolino
  • ,
  • Kazutoshi Inoue
  • ,
  • Naoya Shibata
  • ,
  • Yuichi Ikuhara

12
3
開始ページ
2662
終了ページ
2668
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acsnano.7b08802
出版者・発行元
AMER CHEMICAL SOC

Clarifying how the atomic structure of interfaces/boundaries in materials affects the magnetic coupling nature across them is of significant academic value and will facilitate the development of state-of-the-art magnetic devices. Here, by combining atomic-resolution transmission electron microscopy, atomistic spin polarized first-principles calculations, and differential phase contrast imaging, we conduct a systematic investigation of the atomic and electronic structures of individual Fe3O4 twin boundaries (TBs) and determine their concomitant magnetic couplings. We demonstrate that the magnetic coupling across the Fe3O4 TBs can be either antiferromagnetic or ferromagnetic, which directly depends on the TB atomic core structures and resultant electronic structures within a few atomic layers. Revealing the one-to-one correspondence between local atomic structures and magnetic properties of individual grain boundaries will shed light on in-depth understanding of many interesting magnetic behaviors of widely used polycrystalline magnetic materials, which will surely promote the development of advanced magnetic materials and devices.

Web of Science ® 被引用回数 : 11

リンク情報
DOI
https://doi.org/10.1021/acsnano.7b08802
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000428972600060&DestApp=WOS_CPL

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