Manivannan, V. ; Gopalakrishnan, J. ; Rao, C. N. R. (1994) Synthesis of cuprates of perovskite structure in the Ba-Pb-Cu-O, Ba-Bi-Cu-O, and Ba-Pb-Tl-Cu-O Systems: possible High Tc superconductivity in a perovskite-like phase in the Ba-Pb-Tl-Cu-O system Journal of Solid State Chemistry, 109 (1). pp. 205-209. ISSN 0022-4596
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00224...
Related URL: http://dx.doi.org/10.1006/jssc.1994.1093
Abstract
Cubic cuprates (a ~ 18.6 Å) with a BaCuO2-type structure were obtained in the Ba-Pb-Cu-O and Ba-Bi-Cu-O systems by the reaction of the component oxides at a high temperature (1370-1420 K), followed by quenching. By annealing these phases in oxygen at 1070-1120 K, perovskite-like phase (a ~4.3 Å) of the formulae BaPb1-xCuxO3-y and BaBi1-xCuxO3-y (0 < x ≤ 0.5) were obtained. A perovskite of nominal composition BaPb0.25Tl0.25 Cu0.5O3-y, prepared by a similar procedure, was found to be superconducting with a Tc of ~70 K.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 12714 |
| Deposited On: | 11 Nov 2010 09:06 |
| Last Modified: | 02 Jun 2011 12:01 |
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