Superconducting epitaxial Tl2Ba2CaCu2O8 films on sapphire with cerium oxide buffer layers
- 24 August 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (8) , 982-984
- https://doi.org/10.1063/1.107722
Abstract
Epitaxial Tl2Ba2CaCu2O8 films were prepared on (11̄02)Al2O3 with (100) CeO2 buffer layers. The Tl2Ba2CaCu2O8 was epitaxially oriented with its c axis perpendicular to the substrate surface and [100] Tl2Ba2CaCu2O8 aligned with [100] CeO2 and [22̄01] Al2O3. The films exhibited Tc of 97–98 K as measured both inductively and by ac magnetic susceptibility. Direct transport critical current density Jc at 75 K was 2.8×105 A/cm2.Keywords
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