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dc.contributor.authorNagarajan, R-
dc.contributor.authorAyyappan, S-
dc.contributor.authorRao, C N R-
dc.date.accessioned2012-12-05T09:14:07Z-
dc.date.available2012-12-05T09:14:07Z-
dc.date.issued1994-01-10-
dc.identifier0921-4534en_US
dc.identifier.citationPhysica C 220(3-4), 373–376 (1994)en_US
dc.identifier.urihttps://libjncir.jncasr.ac.in/xmlui/10572/1219-
dc.descriptionRestricted Accessen_US
dc.description.abstractWhile YSr2Cu3O7 cannot be prepared under ambient conditions, partial substitution of the phosphate group for copper, as in YSr2Cu2.8(PO4)0.2Oy, stabilizes this phase in the orthorhombic structure, but the material is not superconducting. Superconductivity in YSr2Cu2.8(PO4)0.2Oy is obtained by increasing the hole concentration through partial substitution of Y by Ca, as in Y0.7Ca0.3Sr2Cu2.8(PO4)0.2Oy (Tc≈40 K). By incorporating the phosphate group in orthorhombic YBaSrCu3O 7, a stable tetragonal derivative of the formula YBaSrCu2.8(PO4)0.2Oy (Tc≈ 47 K) has been prepared; the Tc increases to ∼ 70 K by partial substitution of Y by Ca as in Y0.7Ca0.3BaSrCu2.8(PO4)0.2Oy.en_US
dc.description.urihttp://dx.doi.org/10.1016/0921-4534(94)90926-1en_US
dc.language.isoenen_US
dc.publisherElsevier Science BVen_US
dc.rights© 1994 Elsevier Science BVen_US
dc.subjectCrystal-Structureen_US
dc.subjectcuprate superconductorsen_US
dc.subjectOxyanionen_US
dc.titleOxyanion derivatives of cuprate superconductors - Superconducting 123 phosphatesen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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