# Superconducting Borate Derivatives of 123 Cuprates

Mahesh, R and Nagarajan, R and Rao, CNR (1994) Superconducting Borate Derivatives of 123 Cuprates. In: Solid State Communications, 90 (7). pp. 435-437.

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## Abstract

Incorboratlon of $BO\frac{3-}{3}$ 1on stabilizes $YSr_2Cu_30_7,$ but the borate derivative Is non superconducting. Superconductivity ls not obtained by the partial substitution of Y by Ca In $YSr_2Cu_{3-x}(BO_3)_xO_z.$ Superconductivity has however been found In $YSr_{2-y}Ba_yCU_{3-x}(BO_3)_xO_z$ as well as $Y_{O.5}Ca_{0.5} Sr_{2-y}Ba_yCu_{3-x}(BO_3)_xO_Z$ (y=1, x=0.25). The borate 1on Is coordinated to copperreducing its point group symmetry. Observation of superconductivity tn borate derivatives prepared under mblent conditions Is noteworthy.

Item Type: Journal Article Copyright of this article belongs to Elsevier. Division of Chemical Sciences > Solid State & Structural Chemistry Unit 23 Jun 2006 19 Sep 2010 04:29 http://eprints.iisc.ernet.in/id/eprint/7698