标题: | 钇钡铜氧高温超导薄膜之微波特性研究 Study on Microwave Characteristics of High-Tc Superconducting YBa2Cu3O7-x Thin Films |
作者: | 许□通 Heng-Tung Hsu 曾俊元 Tseung-Yuen Tseng 电子研究所 |
关键字: | 钇钡铜氧;高温超导;微波;superconducting; thin film; microwave |
公开日期: | 1994 |
摘要: | 在此论文中,主要是探讨一包含高温超导薄膜,损耗性介电基板与金接地结 构之微波等效表面阻抗.我们除了以传统二流体模型来理论模拟超导层外, 并将介电基板对微波吸收及金有限之电导率都纳入考虑.关于该结构对于 平面波之散射情况,在某些特定之条件下,基板共振现象将会发生且整个结 构将变成具损耗之共振器.所有影响此共振现象之因素均被探究.至于微波 量测方面,我们制造了单面超导之环型共振器并加以量测;结果显示在 79K 下之品质因子约为2400. We have calculated the microwave effective surface impedance for a structure composed of a superconducting thin film, a lossy dielectric substrate and a gold ground layer.While the classical two-fluid model is used for the superconductor, the absorption of the dielectric substrate and the conductivity of the gold ground plane are included in the analysis.In the scattering of plane wave by such a structure, substrate resonance can occur and the structure will act as a lossy resonant circuit under certain conditions.We have also investigated all the factors that influence the substrate resonance phenomenon.As for the microwave measurement, we have fabricated a single-sided YBCO ring resonator and tested its performance.Results revealed that measured Q was around 2400 at 79K. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT830430040 http://hdl.handle.net/11536/59227 |
显示于类别: | Thesis |