Fabrication of Tl2Ba2CaCu2O8 superconducting films without thallium pellets

Fabrication of Tl₂Ba₂CaCu₂O₈ superconducting films without thallium pellets

Xu Teng-Da¹, Xing Jian¹, Wang Li-Tian¹, Zhang Jin-Li¹, Zhao Sheng-Hui¹, Xiong Yang¹, Zhao Xin-Jie^{1, 2}, Ji Lu^{1, 2, †}, Zhang Xu¹, He Ming¹

(color online) SEM micrographs of Tl-2212 films annealed under different conditions: (a) at 750 °C for 120 min, (b) at 760 °C for 120 min, (c) at 760 °C for 180 min, (d) at 810 °C for 120 min.