In situ growth of superconducting (Pb,Cu)(2)(Ba,Pb)(2)YCu2Oy epitaxial thin films by MOCVD

摘要

Superconducting (T-c= 38 K) thin films of (Pb,Cu)(2)(Ba,Pb)(2)YCu2Oy have been grown by MetalOrganic Chemical Vapor Deposition (MOCVD) on single crystal (001)LaAlO3 substrates in a single deposition run. The critical parameters for stabilizing lead-containing compounds in thin films are considered. It was found that a high vapor pressure of lead-containing species in the gas phase during the film growth determines the stability of formed compounds. The results of high-resolution transmission electron microscopy (HREM) and X-ray diffraction analysis (XRD) analyses of (Pb,Cu)(2)(Ba,Pb)(2)YCu2Oy thin films are presented. (C) 2000 Published by Elsevier Science B.V. [References: 28]