Effect of substrate-twin-induced microstructure on transport properties of epitaxial Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub x/ films in a magnetic field
| Autor: | Dean J. Miller, J. D. Hettinger, M.M. Eddy, Kenneth E. Gray, P.G. Landis, D. H. Kim, J.E. Sharping |
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| Rok vydání: | 1993 |
| Předmět: |
Superconductivity
Materials science High-temperature superconductivity Magnetoresistance Condensed matter physics Substrate (electronics) Condensed Matter Physics Epitaxy Electronic Optical and Magnetic Materials law.invention Electrical resistivity and conductivity law Macle Electrical and Electronic Engineering Current density |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 3:1208-1210 |
| ISSN: | 1558-2515 1051-8223 |
| DOI: | 10.1109/77.233409 |
| Popis: | The role of substrate-induced microstructure on transport properties in c-axis-oriented epitaxial Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub x/ films grown on LaAlO/sub 3/ and SrTiO/sub 3/ has been studied. For a magnetic field parallel to the Cu-O planes, resistivity and the critical current density, J/sub c/, have been measured as a function of angle theta between the applied field and the direction of transport current. Resistivity dips and enhancement of J/sub c/ were observed for magnetic fields applied parallel to the substrate twins in LaAlO/sub 3/ in high fields (>or=2 T). For films on SrTiO/sub 3/, resistivity and J/sub c/ were Lorentz-force independent. > |
| Databáze: | OpenAIRE |
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