Formation of a nanobarrel structure in CPP-GMR spin-valve films

Yoshihiko Fuji, Hiromi Yuasa, Hideaki Fukuzawa

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

As a new approach for current-perpendicular-to-plane giant magnetoresistive (CPP-GMR) spin-valve films, we have proposed a new nanostructure to cause mesoscopic phenomena. For this purpose, we have successfully formed a nanobarrel structure composed of Cu granular-like shape surrounded by Al2O3 insulator in which Cu nanoconducting channel punches through the Al2O3 insulator both at the top and at the bottom. This nanobarrel structure was confirmed by high-resolution transmission electron microscope (HR-TEM) analysis. Both the resistance-voltage characteristics and the resistance-temperature characteristics showed the metallic conductance property, which is in good agreement with the nanostructure identified by HR-TEM analysis. The nanobarrel structure offers features compatible with both nano-ordered electron-confined structure by insulator and low resistance with metallic conductance.

本文言語英語
ページ(範囲)1449-1451
ページ数3
ジャーナルJournal of Magnetism and Magnetic Materials
322
9-12
DOI
出版ステータス出版済み - 5月 1 2010
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 電子材料、光学材料、および磁性材料

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