The number of Cu lamination effect on current-perpendicular-to-plane giant-magnetoresistance of spin valves with Fe 50Co 50 alloy

Hiromi Yuasa, H. Fukuzawa, H. Iwasaki, M. Sahashi

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Abstract

The current-perpendicular-to-plane (CPP) giant-magnetoresistance (GMR) of spin valves with Fe50 Co50 alloy was investigated. It has been reported that the Cu inserted in Fe50 Co50 is effective for enhancing CPP-GMR. In this paper, we investigated the number of Cu lamination effect on CPP-GMR and clarified that higher CPP-GMR is obtained by decreasing the number of Cu layers. In order to ascertain the reason for this tendency, the crystalline structure and magnetization were examined. As a result, it was found that the d spacing of Fe50 Co50 increases when the number of Cu layers is increased, although saturation magnetization does not change.

Original languageEnglish
Article number113907
JournalJournal of Applied Physics
Volume97
Issue number11
DOIs
Publication statusPublished - Jun 30 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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