测量了不同离子掺杂Bi2Sr2CaCu2Oy多晶样品的射频介电常数,发现样品的介电常数存在明显差别,分析认为这是由于离子掺杂改变了材料中的载流子浓度,导致材料的空间电荷极化差异所引起的.基于这种机制,成功解释了不掺杂样品在1700MHz附近的弛豫现象和不同样品损耗性质的差异.
参考文献
| [1] | Fischer O;Kugler M;Maggio-Aprile I;Berthod C;Renner C .Scanning tunneling spectroscopy of high-temperature superconductors[J].Reviews of Modern Physics,2007(1):353-419. |
| [2] | Zhou Sen;Ding Hong;Wang Ziqiang .Correlating off-stoichiometric doping and nanoscale electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8[J].Physical Review Letters,2007,98(07):076401. |
| [3] | 李明亚,齐西伟,瞿体明.铋系高温超导粉体的制备[J].稀有金属材料与工程,2007(z1):40-42. |
| [4] | P.Majewski .Materials aspects of the high-temperature superconductors in the system Bi_2O_3-SrO-CaO-CuO[J].Journal of Materials Research,2000(4):854-870. |
| [5] | Yamada Y;Watanabe T;Suzuki M .Systematic transport properties and their doping dependences for Bi2Sr2CaCu2O8+delta single crystals in a wide doping range[J].Physica, C. Superconductivity and its applications,2007(2):815-816. |
| [6] | Takayanagi T.;Kogure M.;Terasaki I. .Out-of-plane dielectric constant and insulator-superconductor transition in Bi2Sr2Dy1-xErxCU2O8 single crystals[J].Journal of Physics. Condensed Matter,2002(6):1361-1370. |
| [7] | Yamashita T. .New devices based on an HTS intrinsic Josephson junction[J].Physica, C. Superconductivity and its applications,2001(0):58-63. |
| [8] | Machida M.;Tachiki M.;Koyama T. .Direct numerical experiments for electromagnetic wave emissions with collective Josephson vortex dynamics[J].Physica, C. Superconductivity and its applications,2001(0):16-22. |
| [9] | 方萍,刘文涛,冯双久.一种新型片式LC谐振器的理论分析[J].电子元件与材料,2009(04):21-23. |
| [10] | Kittel C;项金钟;吴兴惠.固体物理导论[M].北京:化学工业出版社,2005:316. |
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