Grover, A. K. ; Dhar, S. K. ; Paulose, P. L. ; Nagarajan, V. ; Sampathkumaran, E. V. ; Nagarajan, R. (1987) Influence of chemical substituents on the superconductivity of La1.8Sr0.2CuO4 Solid State Communications, 63 (11). pp. 1003-1007. ISSN 0038-1098
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/003810...
Related URL: http://dx.doi.org/10.1016/0038-1098(87)90649-1
Abstract
The influence of Ca in place of Sr and Eu and Yb in place of La on the superconducting and normal state behaviour of La1.8Sr0.2CuO4 has been investigated. Eu and Ca substituents depress zero resistance temperature (Tc). A semiconducting (localization)-like behaviour, qualitatively scaling with cation concentration, is observed for the air-annealed Ca specimens, whereas Eu and Yb substitutions do not very much alter the normal state behaviour. The data are discussed in terms of possible size and charge mismatch effects.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 14586 |
| Deposited On: | 12 Nov 2010 14:01 |
| Last Modified: | 02 Jun 2011 06:51 |
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