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dc.contributor.authorNagarajan, R-
dc.contributor.authorVijayaraghavan, R-
dc.contributor.authorGanapathi, L-
dc.contributor.authorRam, Ram-
dc.contributor.authorRao, C N R-
dc.date.accessioned2012-12-07T04:57:47Z-
dc.date.available2012-12-07T04:57:47Z-
dc.date.issued1989-05-01-
dc.identifier0921-4534en_US
dc.identifier.citationPhysica C 158(3), 453-457 (1989)en_US
dc.identifier.urihttps://libjncir.jncasr.ac.in/xmlui/10572/1234-
dc.descriptionRestricted Accessen_US
dc.description.abstractSuperconductivity in LnBa2Cu3O7 − δ with Ln = Nd, Eu, Gdand Dy has been investigated as a function of δ, closely following the accompanying changes in crystal structure. Orthorhombic GdBa2Cu3O7 − δ and DyBa2Cu3O7 − δ show a Tc of ≈ 90 K up to δ = 0.2 and a lower Tc plateau (40–50 K) in the δ range 02 to 0.4, similar to that found in YBa2Cu3O7 − δ. The orthorhombic structure II in the lower Tc regions is different from the structure I in the 90 K Tc (low δ) region. The unit cell parameters of the orthorhombic I structure in the high Tc region bear the relationship of a a ≠ b not, vert, similar c/3. This relationship is not seen in the low Tc plateau. The low Tc plateau region does not distinctly manifest itself in NdBa2Cu3O7 − δ just as in LaBa2Cu3O7 − δ.en_US
dc.description.urihttp://dx.doi.org/10.1016/0921-4534(89)90243-8en_US
dc.language.isoenen_US
dc.publisherElsevier Science BVen_US
dc.rights© 1989 Elsevier Science Publishers BVen_US
dc.subjectoxygen stoichiometryen_US
dc.subjectSuperconductivityen_US
dc.subjectOrthorhombic structureen_US
dc.titleEvidence for two distinct orthorhombic structures associated with different Tc regimes in LnBa2Cu3O7 − δ (Ln = Nd, Eu, Gd and Dy): A study of the dependence of superconductivity on oxygen stoichiometryen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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