|
|||||
|
|
57Fe and119Sn Mössbauer study of Ti-Containing highT c superconductors |
|
| Authors: | E Kuzmann S Nasu T Shinjo I Halász |
| Institution: | 1. Department of Nuclear Chemistry, E?tv?s University, Budapest, Hungary 2. Faculty of Engineering Science, Osaka University, Osaka, Japan 3. Institute for Chemical Research, Kyoto University, Uji, Japan 4. Central Research Institute for Chemistry, Budapest, Hungary |
| Abstract: | 57Fe and119Sn Mössbauer spectroscopy as well as X-ray diffractometry were used to study Ti?Ca?Ba?Cu?O high Tc superconductors (Tc=106K) in the 4 to 300 K temperature range. X-ray diffractograms showed the dominant phase of these supercondutors to be 2-1-2-2 type. Three main iron sites were found and associalted with Fe in Cu sites in the real crystal. The dopublet with IS=0.25 mm/s and QS=0.7 mm/s at RT was attributed to the regular Cu site. No magnetic splitting was observed either in Sn or in Fe spectra taken even at 4 and 5K. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |