論文

査読有り
2005年8月

Large magnetoresistance ratio of 10% by Fe50Co50 layers for current-confined-path current-perpendicular-to-plane giant magnetoresistance spin-valve films

APPLIED PHYSICS LETTERS
  • H Fukuzawa
  • ,
  • H Yuasa
  • ,
  • S Hashimoto
  • ,
  • H Iwasaki
  • ,
  • Y Tanaka

87
8
開始ページ
082507
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1063/1.2009837
出版者・発行元
AMER INST PHYSICS

We have realized a large magnetoresistance (MR) ratio of 10.2% by current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) spin-valve films having current-confined-path (CCP) structure formed by AlCu-NOL (nano-oxide-layer). CPP-GMR with conventional Co90Fe10 pinned and free layers showed an MR ratio and a Delta RA (the change of resistance area product) were 4% and 20 m Omega mu m(2), respectively, at a small RA (resistance area product) of 500 m Omega mu m(2). By replacing the Co90Fe10 layers by Fe50Co50 layers both for pinned and free layers, we have successfully realized a MR ratio and a Delta RA of 7.5% and 37.5 m Omega mu m(2), respectively, at a small RA of 500 m Omega mu m(2). Moreover, a large MR ratio of 10.2% and a large Delta RA of 418 m Omega mu m(2) were realized at a relatively large RA of 4100 m Omega mu m(2). This large MR ratio by using Fe50Co50 layers was due to a larger spin-dependent interface scattering factor gamma of 0.72 for the interface between Fe50Co50 and Cu, which was improved from a gamma of 0.62 for the interface between Co90Fe10 and Cu. (c) 2005 American Institute of Physics.

リンク情報
DOI
https://doi.org/10.1063/1.2009837
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000231310700035&DestApp=WOS_CPL
ID情報
  • DOI : 10.1063/1.2009837
  • ISSN : 0003-6951
  • Web of Science ID : WOS:000231310700035

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