Gnanasekar, K. I. ; Pinto, R. ; Tamhane, A. S. ; Gupta, L. C. ; Pai, S. P. ; Apte, P. R. ; Sharon, M. ; Vijayaraghavan, R. (1995) Structural stability of LuBa2Cu3O7−δ and superconductivity in thin films of Lu1−xMxBa2Cu3O7−δ (M=Pr, Tb, and Ce) Physical Review B: Condensed Matter and Materials Physics, 52 (2). pp. 1362-1367. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v52/i2/p1362_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.52.1362
Abstract
We present here the results of our investigations of the structural and superconducting properties of thin films of Lu1−xMxBa2Cu3O7−δ (M=Ce, Pr, and Tb), the three ambivalent rare-earth ions. Our results show that Pr and Tb ions are in the trivalent state and Ce ions are tetravalent. Structural (in)stability of the parent material LuBa2Cu3O7−δ forms the basis of our arguments. We suggest a simple model to account for the influence of Pr ions on superconductivity in cuprates.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 61588 |
| Deposited On: | 15 Sep 2011 12:00 |
| Last Modified: | 10 Jul 2012 08:31 |
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