Site disorder in Co2 Fe (Al,Si) Heusler alloys and its influence on junction tunnel magnetoresistance

K. Inomata, M. Wojcik, E. Jedryka, N. Ikeda, Nobuki Tezuka

研究成果: Article査読

57 被引用数 (Scopus)

抄録

The local structures around Co atoms in Co2 FeSi1-x Alx (x=0, 0.5, and 1.0) Heusler alloys have been investigated using C 59 o NMR spin-echo method and their effect on the tunneling magnetoresistance for the junctions using Co2 FeSi0.5 Al0.5 electrodes has been discussed. The C 59 o NMR spectra of the Heusler alloys are extremely sensitive to the site disorder and clearly distinguish among the A2, B2, and L 21 structures providing quantitative information on the amount of disorder. The tunnel magnetoresistance for the junctions is demonstrated to be sensitive to the site disorder in Co2 FeSi0.5 Al0.5 electrodes.

本文言語English
論文番号214425
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
77
21
DOI
出版ステータスPublished - 2008 6 19

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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