Sequeira, A. ; Rajagopal, H. ; Nagarajan, R. ; Rao, C. N. R. (1989) Neutron diffraction evidence for oxygen dimers in Bi-Ca-Sr-Cu-O superconductors Physica C: Superconductivity, 159 (1-2). pp. 87-92. ISSN 0921-4534
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/092145...
Related URL: http://dx.doi.org/10.1016/0921-4534(89)90108-1
Abstract
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.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 40107 |
| Deposited On: | 21 May 2011 09:04 |
| Last Modified: | 21 May 2011 09:04 |
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