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Oxyanion derivatives of cuprate superconductors - Superconducting 123 phosphates

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dc.contributor.author Nagarajan, R
dc.contributor.author Ayyappan, S
dc.contributor.author Rao, C N R
dc.date.accessioned 2012-12-05T09:14:07Z
dc.date.available 2012-12-05T09:14:07Z
dc.date.issued 1994-01-10
dc.identifier 0921-4534 en_US
dc.identifier.citation Physica C 220(3-4), 373–376 (1994) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1219
dc.description Restricted Access en_US
dc.description.abstract While 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.uri http://dx.doi.org/10.1016/0921-4534(94)90926-1 en_US
dc.language.iso en en_US
dc.publisher Elsevier Science BV en_US
dc.rights © 1994 Elsevier Science BV en_US
dc.subject Crystal-Structure en_US
dc.subject cuprate superconductors en_US
dc.subject Oxyanion en_US
dc.title Oxyanion derivatives of cuprate superconductors - Superconducting 123 phosphates en_US
dc.type Article en_US


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