摘要
Superconducting NdBa2 Cu3 O7-δ (NBCO) thin films with Tc=89 K have been successfully grown on bare (11 02) sapphire substrates by pulsed laser deposition (PLD). The X-ray diffraction results show that the as-grown NBCO films are all c-axis oriented with no observable second phase. The c-axis parameter decreases monotonically with increasing the deposition temperature (Ts), suggesting that the corresponding degradation of Tc for Ts> 790 °C might not originate from oxygen deficiency. It is conceived that the film-substrate reaction that occurring at the interface may cause Ba-deficiency and hence enhance Nd-Ba antisite substitutions.
原文 | 英語 |
---|---|
頁(從 - 到) | 557-561 |
頁數 | 5 |
期刊 | Journal of Low Temperature Physics |
卷 | 131 |
發行號 | 3-4 |
DOIs | |
出版狀態 | 已發佈 - 2003 5月 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 原子與分子物理與光學
- 一般材料科學
- 凝聚態物理學