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Project: Thermodynamic characterization of high-temperature superconductors in the yttrium-barium-copper-oxygen system

Number: 1999-049-1-200
Start: 01 January 2000
End: 10 September 2007
Project of
Members:
Objective

The aim of the project is to obtain and recommend for use in chemical researches, design and practical calculations a set of self-consistent thermodynamic data for three high-temperature superconductors in the Y-Ba-Cu-O system.

Description

This project includes:

  1. (1) critical assessment and accommodation of existing thermodynamic data for solid phases Y123, Y247, Y124 and liquid solutions of components
  2. (2) analytical representation of the Gibbs energy functions for these phases, and
  3. (3) computer-assisted optimization analysis to obtain a set of functions parameters with the best fitting to the experimental results and fulfillment of thermodynamic relations.
Progress
The first stage of this project concerning the Y123 solid solution is completed and the corresponding technical report is published in Pure Appl. Chem. 72(3), pp. 463- 477, 2000

A second paper, titled 'Thermodynamic modeling of superconducting phases in the yttrium–barium–copper–oxygen system' has been published in 2007 in Physica C: Superconductivity, Vol 454, Issues 1-2, pp. 70-76 [doi:10.1016/j.physc.2007.01.014]

Project completed

 <project announcement published in Chem. Int. 23(1) 2001>