Superconducting Bi2Sr2CaCu2O8+X Single Films Grown on SrTiO3 Substrate by the Liquid Phase Epitaxial Method

Epitaxial films of high-Tc superconductor Bi 2 Sr 2 CaCu 2 O 8+x (the so-called 2212 phase) were grown on the (100)-oriented SrTiO 3 substrate by liquid phase epitaxial method using KCl as a flux. It was found that the 2212 phase initially formed islands, and then developed into continuous single films with longer growth duration. The 2212 phase showed a clear epitaxial relationship to the substrate. The continuous film obtained from the growth period of 20 hours acted as a superconductor with T C(r=0) of 84 K and ΔT C of 4 K