| Autor: |
Sakurai, Masaki, Makhlouf, Salah A., Sumiyama, Kenji, Kimio Wakoh, Kimio Wakoh, Kenji Suzuki, Kenji Suzuki |
| Zdroj: |
Japanese Journal of Applied Physics; July 1994, Vol. 33 Issue: 7 p4090-4090, 1p |
| Abstrakt: |
The short-range structure of Fe/Ag granular materials has been studied by means of extended X-ray absorption fine structure (EXAFS). The local structure around Fe atoms is a distorted bcc structure for the as-deposited state of Fe/Ag granular films produced by the ionized cluster beam (ICB) deposition technique. Fe atoms are rather randomly distributed in the Fe/Ag alloy films produced by cosputtering. With increasing annealing temperature and time, the local structure around Fe atoms becomes a strain-free bcc structure in the ICB-deposited films, while Fe clusters are formed in the sputter-deposited films. The formation of small Fe clusters and rough interfaces between the Fe cluster and the Ag matrix is responsible for giant magnetoresistance (GMR) in Fe/Ag granular materials. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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