| Microwave Response of MgB2/A12O3 Superconducting Thin Films by Microstrip Resonator Technique |
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| 引用本文： | 史力斌 郑岩 任骏原 李明标 张凤云 李波欣 董海宽. Microwave Response of MgB2/A12O3 Superconducting Thin Films by Microstrip Resonator Technique[J]. 中国物理快报, 2007, 24(6): 1713-1716 |
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| 作者姓名： | 史力斌 郑岩 任骏原 李明标 张凤云 李波欣 董海宽 |
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| 作者单位： | Department of Physics, Bohai University, Jinzhou 121000 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10174006. |
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| 摘 要： | Double-sided superconducting MgB2 thin films are deposited onto c-A120a substrates by the hybrid physical chemical vapour deposition method. The microwave response of MgB2/A12O3 is investigated by microstrip resonator technique. A grain-size model is introduced to the theory of microstrip resonators to analyse microwave properties of the films. We obtain effective penetration depth of the films at OK （λe0 = 463nm） and surface resistance （R8 = 1.52 mΩ at 11 K and 8. 73 GHz） by analysing the resonant frequency and unload quality factor of the microstrip resonator, which suggests that the impurities and disorders of grain boundaries of MgB2/A12 Oa result in increasing penetration depth and surface resistance of the films.
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| 关 键 词： | 微波效应 超导体 微波传输带 共振器 |
| 收稿时间： | 2007-02-12 |
| 修稿时间： | 2007-02-12 |
Microwave Response of MgB2/Al2O3 Superconducting Thin Films by Microstrip Resonator Technique |
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| SHI Li-Bin,ZHENG Yan,REN Jun-Yuan,LI Ming-Biao,ZHANG Feng-Yun,LI Bo-Xin,DONG Hai-Kuan. Microwave Response of MgB2/Al2O3 Superconducting Thin Films by Microstrip Resonator Technique[J]. Chinese Physics Letters, 2007, 24(6): 1713-1716 |
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| Authors: | SHI Li-Bin ZHENG Yan REN Jun-Yuan LI Ming-Biao ZHANG Feng-Yun LI Bo-Xin DONG Hai-Kuan |
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| Affiliation: | Department of Physics, Bohai University, Jinzhou 121000 |
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| Abstract: | |
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| Keywords: | 74.70.-b 74.70.Ad 74.81.Bd |
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