Determination of Nucleation Parameters of YBCO from High Temperature Solution

Abstract

Cryst. Res. Technol. 341999 4 503-508The growth kinetics of YBCO single crystal from high temperature solution of YBCO-BaO/CuO solute-solvent system has been studied. Based on regular solution model and classical nucleation theory the thermodynamical data investigated for the system are used to determine the nucleation parameters: interfacial energy, metastable zone-width (supercooling temperature), free energy change, critical nucleation radius etc. which leads to the understanding of the nucleation phenomena of YBCO.keywords: YBCO, superconductor, interfacial energy, metastable zone width.