Neutron diffraction evidence for oxygen dimers in Bi-Ca-Sr-Cu-O superconductors
Data(s) |
01/06/1989
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Resumo |
A comparative neutron diffraction study of Bi2CaSr2Cu2O8+δ, Bi2Ca2SrCu2O8+δ and Bi2Ca1.5Y0.5SrCu2O8+δ has not only shown the presence of considerable oxygen excess in the Bi layers, but also evidence for oxygen pairing giving rise to O1−2 or O2−2 type species, probably the latter. The proportion of the paired species increases when Y partly replaces Ca. Furthermore, the Tc decreases with an increase in paired species. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/31311/1/neutron.pdf Sequeira, A and Rajagopal, H and Nagarajan, R and Rao, CNR (1989) Neutron diffraction evidence for oxygen dimers in Bi-Ca-Sr-Cu-O superconductors. In: Physica C: Superconductivity, 159 (1-2). pp. 87-92. |
Publicador |
Elsevier Science |
Relação |
http://dx.doi.org/10.1016/0921-4534(89)90108-1 http://eprints.iisc.ernet.in/31311/ |
Palavras-Chave | #Solid State & Structural Chemistry Unit |
Tipo |
Journal Article PeerReviewed |