中文摘要：

研究了在铝酸镧（LAO）基片上TBCCO凝胶膜的热分解条件对Tl2Ba2CaCu2O8（T1-2212）薄膜的结晶质量、表面形貌、组分比例的影响。SEM和XRD研究表明，凝胶膜经过适当条件热分解后，可以制作出具有致密的晶体结构、高度c轴取向的外延T1-2212超导薄膜，其薄膜具有较好的电学性能。其临界温度Tc可达106K，临界电流密度Jc可达0．83MA／cm2（77K，0T）。

英文摘要：

The effects of thermal decomposition process of TBCCO sol films prepared on lanthanum aluminate substrates on the crystal quality, surface morphology and chemical composition of Tl2Ba2CaCu2O8 （Tl-2212） films were investigated. The SEM and XRD results showed that Tl-2212 superconducting thin films can be prepared by gel films through thermal decomposition process under suitable conditions. The films possess excellent c-axis orientation, dense crystal structure and excellent electrical property. The critical temperatures Tc of the Tl-2212 films are around 106 K, and the Jc around 0.83 MA/cm2 （77 K, 0 T）.