Senapati, K. ; Sahoo, Leena K. ; Pandey, N. K. ; Budhani, R. C. (2002) Irreversibility field and superconducting screening currents in EuBa2Cu3O7films Applied Physics Letters, 80 (4). pp. 619-621. ISSN 0003-6951
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Official URL: http://apl.aip.org/applab/v80/i4/p619_s1?isAuthori...
Related URL: http://dx.doi.org/10.1063/1.1436525
Abstract
Measurements of the critical current density (Jc) and irreversibility field [Birr(T)] of epitaxial, c-axis-oriented EuBa2Cu3O7 (Eu-123) films are reported. The transition temperature (Tc), Jc, and Birr(T) of these pulsed-laser-deposited films depend critically on the growth temperature (TD), growth rate (Gr), and the oxygen partial pressure (pO2) during growth. As compared to YBa2Cu3O7, Eu-based films require lower Gr, higher pO2, and higher TD. These differences are attributed to the lower adatom mobility of Eu and its propensity for a 2+ oxidation state. The lattice mismatch between (100) LaAlO3 and the ab-plane of Eu-123 leads to an elongated c axis and some randomly oriented islands whose growth is truncated by epitaxial lateral overgrowth as the film thickness increases.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Europium Compounds; Barium Compounds; High-temperature Superconductors; Superconducting Epitaxial Layers; Superconducting Transition Temperature; Critical Current Density (superconductivity) |
| ID Code: | 5640 |
| Deposited On: | 19 Oct 2010 11:40 |
| Last Modified: | 23 May 2011 07:20 |
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