IMECH-IR  > 高温气体动力学国家重点实验室
YBa2Cu3O7-delta Superconducting Films Prepared by Low Pressure Post-annealing
Wang LH(王连红); Liu C(刘崇); Fan J(樊菁); Wang, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Source PublicationPROCEEDINGS OF THE 29TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS
2014
Conference Name29th International Symposium on Rarefi ed Gas Dynamics (RGD)
Conference DateJUL 13-18, 2014
Conference PlaceXian, PEOPLES R CHINA
AbstractYBa2Cu3O7-delta precursor films are deposited on 2 '' LaAlO3 wafer by the co-evaporation technique using Y, BaF2 and 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.
WOS IDWOS:000346083400059
DepartmentLHD微尺度和非平衡流动
ISBN978-0-7354-1265-1
URL查看原文
Indexed ByCPCI-S
Language英语
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Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58866
Collection高温气体动力学国家重点实验室
Corresponding AuthorWang, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang LH,Liu C,Fan J,et al. YBa2Cu3O7-delta Superconducting Films Prepared by Low Pressure Post-annealing[C]. MELVILLE, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA:AMER INST PHYSICS,2014.
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