IMECH-IR  > 高温气体动力学国家重点实验室
YBa 2Cu 3O 7-delta superconducting films prepared by low pressure post-annealing
Wang LH(王连红); Liu C(刘崇); Fan J(樊菁)
Source PublicationProceedings of 29th International Symposium on Rarefied Gas Dynamics/AIP Conference Proceedings, v.1631
2014
Conference NameThe 29th International Symposium on Rarefied Gas Dynamics
Conference Date2014-07-13
Conference Place中国陕西西安
AbstractYBa2Cu3O7-deltaprecursor films are deposited on 2" LaAlO3wafer by the co-evaporation technique using Y, BaF2and Cu as evaporation sources. After deposition, the films are annealed at low-pressure atmosphere with the composition of oxygen and water vapour. Compared with the normal pressure annealing, it is shown that low pressure can greatly improve the superconducting properties of 2" YBCO films with thickness larger than 500 nm, as the microcrack on films surface becomes unobservable the microwave surface resistance is greatly reduced. Furthermore, it is also revealed that the optimal processing window for making high quality superconducting YBCO films through ex-situ process is relatively small, therefore the ambient in annealing furnace is crucial important and should be precisely controlled.
DepartmentLHD微尺度和非平衡流动
URL查看原文
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/55215
Collection高温气体动力学国家重点实验室
Recommended Citation
GB/T 7714
Wang LH,Liu C,Fan J. YBa 2Cu 3O 7-delta superconducting films prepared by low pressure post-annealing[C]Proceedings of 29th International Symposium on Rarefied Gas Dynamics/AIP Conference Proceedings, v.1631,2014.
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