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YBa2Cu3O7-δ (YBCO) thin films were prepared by thermal coevaporation on (LaAlO3) LAO substrates,and Tl2Ba2CaCu2O8 (TBCCO) thin films were synthesized by magnetron sputtering method on LAO substrates. We obtained the strain from the results of XRD of the films,which had the values of ΔCY=48483×10-3 and ΔCT=85272×10-5. We found that the strain in YBCO was larger than that in TBCCO. In addition, the curve of surface resistance of the films as a funttion of temperature was obtained by coplanar resonator technique, which showed the resistance of YBCO was larger than that of TBCCO at the same reduced temperature. In the paper, we also analyzed the strain effect on the surface resistance of the films.
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Keywords:
- YBCO/LAO /
- TBCCO/LAO /
- superconducting films /
- strain /
- surface resistance
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物理学报. 2008, 57(2): 1183-1189.
doi: 10.7498/aps.57.1183.
YBa2Cu3O7-δ/LaAlO3和Tl2Ba2CaCu2O8/LaAlO3高温超导薄膜内的应变对其微波表面电阻影响的研究
- 收稿日期: 2007-06-02
- 修回日期: 2007-06-15
- 刊出日期: 2008-01-05
English Abstract
Strain effect on microwave surface resistance of YBa2Cu3O7-δ/LaAlO3 and Tl2Ba2CaCu2O8/LaAlO3 high temperature superconducting thin films
- Received Date:
02 June 2007
- Accepted Date:
15 June 2007
- Published Online:
05 January 2008
Abstract: YBa2Cu3O7-δ (YBCO) thin films were prepared by thermal coevaporation on (LaAlO3) LAO substrates,and Tl2Ba2CaCu2O8 (TBCCO) thin films were synthesized by magnetron sputtering method on LAO substrates. We obtained the strain from the results of XRD of the films,which had the values of ΔCY=48483×10-3 and ΔCT=85272×10-5. We found that the strain in YBCO was larger than that in TBCCO. In addition, the curve of surface resistance of the films as a funttion of temperature was obtained by coplanar resonator technique, which showed the resistance of YBCO was larger than that of TBCCO at the same reduced temperature. In the paper, we also analyzed the strain effect on the surface resistance of the films.
-
Keywords:
- YBCO/LAO /
- TBCCO/LAO /
- superconducting films /
- strain /
- surface resistance
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