| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Effects of thickness on superconducting properties and structures of Y2O3/BZO-doped MOD-YBCO films |
| Ding Fa-Zhu (丁发柱)a b, Gu Hong-Wei (古宏伟)a b, Wang Hong-Yan (王洪艳)a b, Zhang Hui-Liang (张慧亮)a b, Zhang Teng (张腾)a b, Qu Fei (屈飞)a b, Dong Ze-Bin (董泽斌)a b, Zhou Wei-Wei (周微微)a b |
a Key Laboratory of Applied Superconductivity, Chinese Academy of Sciences, Beijing 100190, China;
b Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract We report the thickness dependence of critical current density (Jc) in YBa2Cu3O7-x (YBCO) films with BaZrO3 (BZO) and Y2O3 additions grown on single crystal LaAlO3 substrates by metalorganic deposition using trifluoroacetates (TFA-MOD). Comparing with pure YBCO films, the Jc of BZO/Y2O3-doped YBCO films was significantly enhanced. It was also found that with the increase of the thickness of YBCO film from 0.25 μm to 1.5 μm, the Ic of BZO/Y2O3-doped YBCO film increased from 130 A/cm to 250 A/cm and yet Jc of YBCO film decreased from 6.5 MA/cm2 to 2.5 M A/cm2. The thick BZO/Y2O3-doped MOD-YBCO film showed lower Jc, which is mainly attributed to the formation of a-axis grains and pores.
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Received: 27 November 2014
Revised: 05 January 2015
Accepted manuscript online:
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PACS:
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74.78.-w
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(Superconducting films and low-dimensional structures)
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74.25.Sv
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(Critical currents)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51272250), the National Basic Research Program of China (Grant No. 2011CBA00105), the National High Technology Research and Development Program of China (Grant No. 2014AA032702), and the Beijing Natural Science Foundation, China (Grant No. 2152035). |
Corresponding Authors:
Ding Fa-Zhu, Gu Hong-Wei
E-mail: dingfazhu@mail.iee.ac.cn;guhw@mail.iee.ac.cn
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| About author: 74.78.-w; 74.25.Sv |
Cite this article:
Ding Fa-Zhu (丁发柱), Gu Hong-Wei (古宏伟), Wang Hong-Yan (王洪艳), Zhang Hui-Liang (张慧亮), Zhang Teng (张腾), Qu Fei (屈飞), Dong Ze-Bin (董泽斌), Zhou Wei-Wei (周微微) Effects of thickness on superconducting properties and structures of Y2O3/BZO-doped MOD-YBCO films 2015 Chin. Phys. B 24 057401
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