Structure and Superconducting Properties of the $Tl_{1-\delta} CaBa_2Cu_2O_7$ and $Tl_{1-\delta}Y_{1-x}Ca_x Ba_2Cu_2O_7$ Series

Vijayaraghavan, R and Gopalakrishnan, J and Rao, CNR (1992) Structure and Superconducting Properties of the $Tl_{1-\delta} CaBa_2Cu_2O_7$ and $Tl_{1-\delta}Y_{1-x}Ca_x Ba_2Cu_2O_7$ Series. In: Journal of Materials Chemistry, 2 (3). pp. 327-330.

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Abstract

Superconducting $Tl_{1-\delta}CaBa_2Cu_2O_7$ can be prepared without impurity from the corresponding two Tl-0 layer cuprate only when some Tl deficiency is incorporated. The $Tl_{1-\delta}CaBa_2Cu_2O_7$ and $Tl_{1-\delta}Y_{1-x}Ca_xBa_2Cu_2O_7$ series show maximum $T_c$ at an optimal hole concentration. The $T_c$ maximum occurs at a Cu-0 distance of ca. 1.924 \AA.

Item Type:	Journal Article
Publication:	Journal of Materials Chemistry
Publisher:	Royal Society of Chemistry
Additional Information:	Copyright of this article belongs to Royal Society of Chemistry.
Keywords:	Superconductivity; Thallium-calcium-barium-copper-oxygen system; Superconducting oxide
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	26 Feb 2008
Last Modified:	19 Sep 2010 04:32
URI:	http://eprints.iisc.ac.in/id/eprint/8844

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