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Structure and properties of Tl0.5Pb0.5Sr2Gd2−xCexCu2O9−δ

Vijayaraghavan, R and Michel, C and Maignan, A and Hervieu, M and Martin, C and Raveau, B and Rao, CNR (1993) Structure and properties of Tl0.5Pb0.5Sr2Gd2−xCexCu2O9−δ. In: Physica C: Superconductivity, 206 (1-2). pp. 81-89.

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Official URL: http://dx.doi.org/10.1016/0921-4534(93)90704-T

Abstract

A systematic study of the Tl0.5Pb0.5Sr2Gd2−xCexCu2O9−δ system has revealed the existence of a pure phase in the compositional. range 0.0≤x≤0.6 crystalizzing in the 1222 structure. It has an intersheet distance of approximately 6 Å, a value much higher than those found in other cuprates with double CuO2 sheets interleaved by a single fluorite layer. Superconductivity has been observed in the range 0.1≤x≤0.4 with a Tc of 45 K and a superconductive volume fraction up to 20% for the optimal composition. An interesting variation of the superconducting properties of the above system with the composition, i.e. cerium content, has also been noticed. A possible dependence of superconductivity on the coupling between CuO2 sheets in the layered cuprates has been pointed out to bring out a correlation between structure and properties.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 28 Feb 2011 06:39
Last Modified: 28 Feb 2011 06:39
URI: http://eprints.iisc.ernet.in/id/eprint/35772

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