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THERMODYNAMIC MEASUREMENTS IN THE YBCO SYSTEM.

Author(s) : GARZON F. H., RAISTRICK I. D.

Type of article: Periodical article

Summary

THE DISCOVERY OF3 HIGH TEMPERATURE SUPERCONDUCTING PHASES: YBA(2)CU(3)O(7-X), YBA(2)CU(3.5)O(15-X) AND YBA(2)CU(4)O(8) HAS AROUSED INTEREST IN THE THERMOCHEMISTRY OF THESE COMPOUNDS AND OTHER COEXISTING, NON-SUPERCONDUCTING PHASES. MEASUREMENT OF THERMODYNAMIC VALUES OF THE FORMATION OF THESE COMPOUNDS SUCH AS ENTHALPIES, ENTROPIES AND GIBBS FREE ENERGIES CAN LEAD TO A BETTER UNDERSTANDING OF THE PHASE EQUILIBRIA, REACTIVITY AND CHEMICAL BONDING WITHIN THESE NOVEL MATERIALS. ENTHALPIES OF FORMATION ARE OF PARTICULAR VALUE AS THEY MAY BE EVALUATED TOGETHER WITH HEAT CAPACITY DATA TO PROVIDE GIBBS FREE ENERGIES AND ENTROPIES.

Details

  • Original title: THERMODYNAMIC MEASUREMENTS IN THE YBCO SYSTEM.
  • Record ID : 1992-0041
  • Languages: English
  • Source: NIST spec. Publ. - NIST SP 804; 373-378; 1 tabl.; 8 ref.
  • Publication date: 1991/01
  • Document available for consultation in the library of the IIR headquarters only.

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