Studies on superconductivity in Y1LaxBa2-xCu3O7± compositions

Chandrachood, M. R. ; Mulla, I. S. ; Sinha, A. P. B. (1988) Studies on superconductivity in Y1LaxBa2-xCu3O7± compositions Solid State Communications, 68 (11). pp. 1005-1009. ISSN 0038-1098

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Compounds of the series Y1Ba2-xLaxCu3O where La3+ ions substitute for the Ba2+ have been synthesised upto x=1 and their powder x-ray diffraction give no evidence of any extra phase. The structure changes from orthorhombic to tetragonal at x~0.4. All the compounds of this series are superconducting but the Tc decreases with increasing x. The oxygen content per unit cell increases with increasing La3+ in such a way that (Cu---O)1+ concentration remains unchanged at~0.7 for all compositions. Still the Tc falls abruptly from~90K for orthorhombic phase to <50K for the tetragonal phases.

Item Type:Article
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ID Code:48952
Deposited On:18 Jul 2011 10:12
Last Modified:18 Jul 2011 10:12

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