Experimental confirmation of grain boundary magnetism in FeSi and FeSn alloys by TEM-EELS

Seiichiro Ii, Kyosuke Hirayama, Sadahiro Tsurekawa

研究成果: ジャーナルへの寄稿記事

抄録

We measured the local magnetic moments at grain boundaries in FeSi and FeSn alloys by electron energy loss spectroscopy with a transmission electron microscope and evaluated the relation between the grain boundary magnetism and grain boundary segregation in FeSi and FeSn alloys. We found that the local magnetic moments at the random boundaries in these alloys were remarkably reduced in comparison with those in pure Fe, whereas there was no considerable change at the 5 grain boundary and low-angle boundary. The variation of the local magnetic moments at impurity-segregated grain boundaries was explained by the competition between magnetovolume effect and hybridizations of electrons. It was found that the grain boundary character remarkably affects this hybridization. The decrease in the magnetic moments at random grain boundaries was more pronounced in the FeSn alloy than in the FeSi alloy.

元の言語英語
ページ(範囲)636-641
ページ数6
ジャーナルMaterials Transactions
60
発行部数5
DOI
出版物ステータス出版済み - 1 1 2019

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Electron energy loss spectroscopy
Magnetism
Grain boundaries
grain boundaries
Transmission electron microscopy
transmission electron microscopy
Magnetic moments
magnetic moments
Electron microscopes
electron microscopes
energy dissipation
Impurities
electron energy
impurities
Electrons
spectroscopy
electrons

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Experimental confirmation of grain boundary magnetism in FeSi and FeSn alloys by TEM-EELS. / Ii, Seiichiro; Hirayama, Kyosuke; Tsurekawa, Sadahiro.

:: Materials Transactions, 巻 60, 番号 5, 01.01.2019, p. 636-641.

研究成果: ジャーナルへの寄稿記事

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