Influences of Thalliation on the Morphology and Critical Temperature of Tl2Ba2CaCu2O8 Thin Films
LEI Chong1,2, ZHAO Xin-Jie1, WANG Tian-Sheng1,2, PENG Wei1, YU Hong-Chun1, CHEN Ying-Fei1, TIAN Yong-Jun2, LI Lin1
1National Laboratory of Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
2Department of Material Science and Chemical Engineering, Yanshan University, Qinhuandao 066004
Influences of Thalliation on the Morphology and Critical Temperature of Tl2Ba2CaCu2O8 Thin Films
LEI Chong1,2;ZHAO Xin-Jie1;WANG Tian-Sheng1,2;PENG Wei1;YU Hong-Chun1;CHEN Ying-Fei1;TIAN Yong-Jun2;LI Lin1
1National Laboratory of Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
2Department of Material Science and Chemical Engineering, Yanshan University, Qinhuandao 066004
Abstract： Tl2Ba2CaCu2Ox (Tl-2212) thin films were prepared by the two-step technique. A precursor film was first prepared by the pulsed laser deposition method, and then experienced the incorporation of thalliation in a one-step or two-step annealing process. The experimental results show that the two-step annealing process produces dense and smooth films, and that the one-step annealing process produced a high critical temperature film of 101K, but the transition width is wide. Precursor films with homogeneous Ba2Ca1.3Cu2.1Ox composition are essential for producing high quality Tl-2212 films.
LEI Chong;ZHAO Xin-Jie;WANG Tian-Sheng;PENG Wei;YU Hong-Chun;CHEN Ying-Fei;TIAN Yong-Jun;LI Lin. Influences of Thalliation on the Morphology and Critical Temperature of Tl2Ba2CaCu2O8 Thin Films
[J]. 中国物理快报, 2002, 19(8): 1158-1160.
LEI Chong, ZHAO Xin-Jie, WANG Tian-Sheng, PENG Wei, YU Hong-Chun, CHEN Ying-Fei, TIAN Yong-Jun, LI Lin. Influences of Thalliation on the Morphology and Critical Temperature of Tl2Ba2CaCu2O8 Thin Films
. Chin. Phys. Lett., 2002, 19(8): 1158-1160.
2002, Vol. 19 
