A neutron diffraction study of the superconductor, $Tl_{0.5}Pb_{0.5}CaSr_2Cu_2O_y$

Ganguli, AK and Nanjundaswamy, KS and Rao, CNR and Sequeira, A and Rajagopal, H (1989) A neutron diffraction study of the superconductor, $Tl_{0.5}Pb_{0.5}CaSr_2Cu_2O_y$. In: Materials Research Bulletin, 24 (7). pp. 883-888.

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Abstract

The structure of $Tl_{0.5}Pb_{0.5}CaSr_2Cu_2O_y$ $(T_c = 90K)$ has been investigated by neutron diffraction profile analysis and the results discussed in the light of the structures of $TlCaBa_2CuP_2C_y$ and $TlCa_{0.5}Y_{0.5}Ba_2Cu_2O_y$. We find no evidence for disorder in the Tl/Pb sites, but there is some interchange between Ca and Sr sites. The Cu---O bond distances in these cuprates seem to parallel the variation of the superconducting transition temperature in these cuprates.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Elsevier Science
Keywords:	Thallium; Calcium; Strontium; Lead; Copper; Oxides; Superconductor
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	24 Feb 2008
Last Modified:	19 Sep 2010 04:42
URI:	http://eprints.iisc.ernet.in/id/eprint/12846

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