Subramanian, M. A. ; Ganguli, A. K. (1991) Superconductivity in Tl1−xCdxBaLaCuO5 Materials Research Bulletin, 26 (1). pp. 91-95. ISSN 0025-5408
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0025-5408(91)90042-K
Abstract
Cadmium substituted thallium cuprates of the type Tl1−xCdxBaLaCuO5 (R = La and Nd) have been synthesized for various values of x. A single phase region exists for x = 0 to 0.4. Superconductivity was observed over the region 0.2 ≤ x ≤ 0.4 with transition temperatures in the range 38-48 K. X-ray diffraction data suggest that cadmium substitutes for thallium, thereby increasing the number of holes in the Cu---O dx2−y2 (σ*) conduction band. A plot of Tc versus x showed a maximum when the formal oxidation state of copper is close to 2.3 as observed in other superconducting copper oxide systems.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Superconductors; Thallium; Strontium; Cadmium; Copper |
| ID Code: | 62033 |
| Deposited On: | 16 Sep 2011 03:44 |
| Last Modified: | 16 Sep 2011 03:44 |
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