Project Details:

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

Project No.:1999-049-1-200
Start date:2000-01-01
End date:2007-09-10
Division:Inorganic Chemistry Division
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 solutionis completed and the corresponding technical report is published inPureAppl. Chem. 72(3),pp. 463- 477, 2000

A second paper, titled 'Thermodynamic modeling of superconducting phasesin the yttrium–barium–copper–oxygen system' has beenpublished 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 inChem.Int.23(1) 2001>