O'Connor, J. D. and Dew-Hughes, D. and Reschauer, N. and Brozio, W. and Wagner, H. H. and Renk, Karl F. and Goringe, M. J. and Grovenor, C. R. M. and Kaiser, T. (1998) The transmission electron microscopy investigation and electrical properties of epitaxial Tl-1223 and Bi-substituted T1-1223 thin films grown by in-situ laser ablation. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 302 (4). pp. 277-289. ISSN 0921-4534
Full text not available from this repository.Abstract
Tl1Ba2Ca2Cu3Ox thin films, with and without Bi-substitution, have been fabricated by in-situ laser ablation on (001) SrTiO3 and (001) LaAlO3 substrates. Using transmission electron microscopy and allied techniques, the films have been characterised in cross-section. In the case of films grown without Bi-substitution, heavily defected microstructures with a-axis oriented grains and stacking-type planar defects resulting in discontinuous a-b planes have been observed. Films fabricated with Bi-substitution have highly defected microstructures within about 150 nm of the substrate, with considerably less faulting further from the substrate where the bulk of the superconducting currents flow and the microwave properties are primarily determined. Bi-substituted films have been fabricated with critical current density values up to 8 x 10(5) A cm(-2) (77 K) and surface resistances values as low as 56 m Ohm (77 K, 87 GHz), which is equivalent to 0.74 m Ohm at 10 GHz, assuming a frequency-squared relationship. (C) 1998 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CEO2 BUFFERED SAPPHIRE; TL2BA2CA1CU2OX FILMS; SURFACE-RESISTANCE; IMPEDANCE; Tl-1223 thin films; laser ablation; transmission electron microscopy |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Karl F. Renk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Feb 2023 11:42 |
| Last Modified: | 23 Feb 2023 11:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49710 |
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