197Au Mössbauer study of Au/Ni and Au/Fe metallic superlattices |
| |
Authors: | Y Kobayashi S Nasu T Emoto T Shinjo |
| |
Institution: | (1) Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka, 560 Osaka, Japan;(2) Institute for Chemical Research, Kyoto University, 611 Uji Kyoto-fu, Japan |
| |
Abstract: | 197Au Mössbauer measurements have been performed for Au/Ni and Au/Fe metallic superlattices at below 75 K. For Au/Ni superlattices, the area ratio in a spectrum between a superlattice component and that of the pure Au buffer layer has been determined at 25, 50 and 75 K. From the area ratios, it is found that the recoil-free fraction of Au in Au(10 Å)/Ni(10 Å) is larger than that of the bulk Au, suggesting the existence of the supermodulus effect in this superlattice. The197Au Mössbauer spectrum obtained from Au(5 Å)/Fe(8 Å) is entirely magnetic at 16 K, suggesting the existence of a magnetic hyperfine interaction at197Au nuclei through the transferred electron spin polarization. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|