Tl2Ba2CaCu2O8 thin films on MgO and sapphire substrates

被引：0

作者：

Zhao, X. J. ^{[1
]}

Ji, L. ^{[1
]}

Zhang, C. ^{[1
]}

Chen, E. ^{[1
]}

Zhou, T. G. ^{[1
]}

Zhang, X. ^{[1
]}

Xie, Q. L. ^{[1
]}

Li, S. ^{[1
]}

Li, Y. G. ^{[1
]}

Zuo, X. ^{[1
]}

Fang, L. ^{[1
]}

Yan, S. L. ^{[1
]}

机构：

[1] Nankai Univ, Dept Elect, Tianjin 300071, Peoples R China

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2006年 / 48卷 / 05期

关键词：

Tl2Ba2CaCu2O8(Tl-2212) films; biaxial textures;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High quality Tl2Ba2CaCu2O8(Tl-2212) films were grown on MgO and sapphire substrates with CeO2 buffer layers. The CeO2 buffer layers were prepared by using an in-situ process with RF magnetron sputtering. The Tl-2212 thin films were then fabricated in a two-step process: deposition of the Tl-containing precursor film and low-temperature post-thallination of the precursor film. The resulting Tl-2212 films showed an excellent biaxial texture. The superconducting transition temperatures, T-c's, of the films on MgO and sapphire were 103.4 and 104.2 K, respectively. The critical current densities J(c) at 77 K and zero magnetic field were as high as 2.37 x 10(6) A/cm(2) for the film on MgO and 1.76 x 10(6) A/cm(2) on sapphire. A surface resistance of 725 mu Omega at 10 GHz and 77 K was obtained in the Tl-2212 film on CeO2 buffered sapphire.

引用

页码：1143 / 1146

页数：4

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