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THERMODYNAMIC STABILITY OF COMPLEX OXIDE Sm_(1+x)Ba_(2-x)Cu_3O_y(0≤x≤0.4) |
XING Hianran; QIAO Zhiyu; WEI Shoukun(University of Science and Technology Beijing; Beijing 100083)(Manuscript received 1995-05-02; in revised form 1995-11-05) |
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Cite this article:
XING Hianran; QIAO Zhiyu; WEI Shoukun(University of Science and Technology Beijing; Beijing 100083)(Manuscript received 1995-05-02; in revised form 1995-11-05). THERMODYNAMIC STABILITY OF COMPLEX OXIDE Sm_(1+x)Ba_(2-x)Cu_3O_y(0≤x≤0.4). Acta Metall Sin, 1996, 32(2): 144-148.
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Abstract An assembly for performing EMF measurements using a CaF2 single crystal as a solid state electrolyte has been constructed. From the EMF data, the standard Gibbs energies of formation of member oxides in the Sm-Ba-Cu-O system were calculated. It is found that the thermodynamic stability of the complex oxide Sm_(1+x)Ba_(2-x)Cu_3O_y(0≤x≤0.4)decreases with the increase in the solid solubility x.(Correspondent: XING Xianran, associate professor-Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083.)
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Received: 18 February 1996
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