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Thermodynamic analysis and technology of preparation of high‐ T c superconducting system YBa 2 Cu 3 O 7− x
Author(s) -
Huan Le Van,
Tuong Vu Huu,
Tuong Le Thi Cat
Publication year - 1990
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170251207
Subject(s) - superconductivity , gibbs free energy , phase (matter) , thermodynamics , materials science , high temperature superconductivity , analytical chemistry (journal) , condensed matter physics , chemistry , physics , organic chemistry , chromatography
By modeling the equilibrium state of the phase formation reaction of High‐ T c superconducting phase 1:2:3 (YBa 2 Cu 3 O 7− x ) and using the results of P ‐T− x correlation investigation of some authors, the variation of Gibbs free energy (Δ G m) versus temperature has been calculated. On the basis of the variation of Δ G m, the technology procedure of preparation of phase 1:2:3 with desired x has been established to meet requirement of basic investigation and application of High‐ T c superconductors YBa 2 Cu 3 O 7− x .