Microstructure and Microwave Properties of Tl2Ba2CaCu2O8 Thin Films on CaNdAlO4(001)
- 1 April 1991
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 30 (4B) , L710-713
- https://doi.org/10.1143/jjap.30.l710
Abstract
High-quality epitaxial Tl2Ba2CaCu2O8 superconducting thin films have been grown on CaNdAlO4 (001) substrates by a two step process. Analysis results from secondary ion mass spectroscopy and X-ray energy dispersive spectroscopy of a film annealed at 850°C indicated non-uniform Nd and Ca interdiffusion from the substrate into the film. A second film, annealed at 800°C, exhibited better superconducting properties with a T c of 100.7 K, transition width of 2.5 K, and J c of 3.5×105 A/cm2 at 77 K. Microwave measurement at 77 K of a 2.3 GHz microstrip resonator made from the 800°C annealed film on a CaNdAlO4 substrate exhibited a low power Q of 2,100.Keywords
This publication has 8 references indexed in Scilit:
- Superconducting Tl-Ca-Ba-Cu-O thin film microstrip resonator and its power handling performance at 77 KPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Growth of high quality YBa2Cu3O7 films on various substrate materials and influence of Zn-doping on superconductivityPhysica C: Superconductivity and its Applications, 1990
- An experimental investigation of YBa2Cu3O7 films at millimeter-wave frequenciesJournal of Superconductivity, 1990
- Epitaxial Tl2CaBa2Cu2O8 thin films with low 9.6 GHz surface resistance at high power and above 77 KApplied Physics Letters, 1990
- CaNdAlO4 perovskite substrate for microwave and far-infrared applications of epitaxial high T c superconducting thin filmsApplied Physics Letters, 1990
- Low-loss microstrip delay line in Tl2Ba2CaCu2O8Applied Physics Letters, 1990
- Microwave surface resistance in Tl-based superconducting thin filmsApplied Physics Letters, 1989
- Preparation of superconducting Tl-Ca-Ba-Cu thin films by chemical depositionApplied Physics Letters, 1989