Somasundaram, P. ; Mohan Ram, A. ; Umarji, A. M. ; Rao, C. N. R. (1990) Synthesis and characterization of superconducting YbBa2Cu3O7−δ and Y1−xLuxBa2Cu3O7−δ (0.0<x<0.75): lower limit of the rare-earth ion radius tolerated in the 123 cuprate system Materials Research Bulletin, 25 (3). pp. 331-335. 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(90)90104-A
Abstract
YbBa2Cu3O7−δ with a Tc (zero-resistance) of 89K has been prepared without contamination of Yb2BaCuO5. Monophasic LuBa2Cu3O7−δ cannot be prepared. Solid solutions of the type Y1−xLuxBa2Cu3O7−δ (0.0<x≤0.75) are, however, stable and superconducting (zeroresistance Tc, 89K). It appears that the lower limit of the rare earth ion radius tolerated by the 123 cuprate structure is close to that of Yb3+ (0.985 Å).
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Ytterbium; Lutetium; Barium; Cuprates |
| ID Code: | 42344 |
| Deposited On: | 02 Jun 2011 12:05 |
| Last Modified: | 02 Jun 2011 12:05 |
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