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DC Field | Value | Language |
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dc.contributor.author | Nagarajan, R | - |
dc.contributor.author | Vijayaraghavan, R | - |
dc.contributor.author | Ganapathi, L | - |
dc.contributor.author | Ram, Ram | - |
dc.contributor.author | Rao, C N R | - |
dc.date.accessioned | 2012-12-07T04:57:47Z | - |
dc.date.available | 2012-12-07T04:57:47Z | - |
dc.date.issued | 1989-05-01 | - |
dc.identifier | 0921-4534 | en_US |
dc.identifier.citation | Physica C 158(3), 453-457 (1989) | en_US |
dc.identifier.uri | https://libjncir.jncasr.ac.in/xmlui/10572/1234 | - |
dc.description | Restricted Access | en_US |
dc.description.abstract | Superconductivity 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.uri | http://dx.doi.org/10.1016/0921-4534(89)90243-8 | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Science BV | en_US |
dc.rights | © 1989 Elsevier Science Publishers BV | en_US |
dc.subject | oxygen stoichiometry | en_US |
dc.subject | Superconductivity | en_US |
dc.subject | Orthorhombic structure | en_US |
dc.title | Evidence 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 stoichiometry | en_US |
dc.type | Article | en_US |
Appears in Collections: | Research Papers (Prof. C.N.R. Rao) |
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1989.27.pdf Restricted Access | 324.21 kB | Adobe PDF | View/Open Request a copy |
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