摘要
We have studied oxygen deficient GdBa2Cu3O7-y samples by heating cycle technique and correlated the resistivity data with the oxygen deficiency derived from TGA. An orthorthombic to tetragonal phase transformation was found at about 720 K and it is consistent with that derived from the X-ray data. The resistivity is hysteretic cooling and shows semiconducting behavior for y≥0.7. Localization was found for samples with semiconductive properties. The electron-phonon coupling constant derived from the electric and magnetic measurements is λtr=0.31 which suggests a weak electron-phonon coupling in high-Tc oxides.
原文 | 英語 |
---|---|
頁(從 - 到) | 480-484 |
頁數 | 5 |
期刊 | Physica C: Superconductivity and its applications |
卷 | 158 |
發行號 | 3 |
DOIs | |
出版狀態 | 已發佈 - 1989 5月 1 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 電子、光磁材料
- 凝聚態物理學
- 能源工程與電力技術
- 電氣與電子工程