Some thermodynamic aspects of highT c superconductors |
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| Authors: | J. Šesták D. Sedmidubsky G. Moiseev |
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| Affiliation: | (1) Division of Solid-State Physics, Institute of Physics of the Academy of Sciences, Cukrovarnická 10, 16200 Praha 6;(2) Faculty of Chemical Technology, Department of Inorganic Chemistry, Institute of Chemical Technology, Technická 5, 167 18 Praha, Czech Republic;(3) Institute of Metallurgy, Ural's Division of Academy of Sciences, 101 Amudsen str., 620316 Ekaterinburg, Russia |
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| Abstract: | ![]()
Thermochemical and thermodynamical properties of HTSC phases are reviewed for the Y-Ba-Cu-O system and also presented for the newly calculated Bi-Sr-Cu-O system stressing out stoichiometric and phenomenological viewpoints. Simulated data are listed for (H298o-Hoo, phase transformation temperatures, standard entropies, standard enthalpies of formation, heat capacities in crystalline phase, etc. Pseudobinary phase diagrams are treated showing the effect of oxygen partial pressure particularly illustrated on the (Sr, Bi, Ba)-Cu-O system.The work was carried out under the project No. A 2010532 supported by the Grant Agency of Academy of Sciences of the Czech Republic and the grant No. 104/97/0589 financed by the Grant Agency of the Czech Republic. |
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| Keywords: | data simulation enthalpy non-stoichiometry oxide superconductors phase diagrams thermodynamics Y-Ba-Cu-O and Bi-Sr-Cu-O systems |
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