Thermodynamic Properties of the Systems Y (Ln)Ba2Cu3Ox

Authors:
E.N. Solovyeva M.M. Pivovarov V.G. Konakov
Abstract:

The enthalpies of formation of Ry R'1-yBa2Cu3Ox (R, R'=Y, Nd, Eu; y=0; 0,5) have been determined at 298K by solution calorimetry. These values were shown for YBa2Cu3Ox to depend on the oxygen stoichiometry of a sample. The results of thermodynamic investigations were found to be in good agreement with the data of the kinetic investigations of the Y (Ln) Ba2 Cu3 Ox formation reactions. This agreement is explained in the aspect of electronic structure of lanthanide atoms.