Microwave surface resistance of epitaxial YBa/sub 2/Cu/sub 3/O/sub 7-x/ films: studies on oxygen deficiency and disordering

Author

Klein, N. ; Poppe, U. ; Tellmann, N. ; Schulz, H. ; Evers, W. ; Dahne, U. ; Urban, K.

Author_Institution

Inst. fur Festkorperforschung, Forschungszentrum Julich GmbH, Germany

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1102

Lastpage

1109

Abstract

The authors have studied the microwave surface resistance R/sub S/ at 19 GHz of epitaxial YBa/sub 2/Cu/sub 3/O/sub 7-x/ films prepared by high oxygen pressure DC-sputtering on NdGaO/sub 3/ and LaAlO/sub 3/ substrates. Oxygen deficiency x, O>

Keywords

annealing; barium compounds; high-frequency effects; high-temperature superconductors; order-disorder transformations; sputtered coatings; stoichiometry; superconducting energy gap; superconducting epitaxial layers; superconducting thin films; superconducting transition temperature; surface conductivity; yttrium compounds; 19 GHz; 60 to 250 degC; CuO chains; LaAlO/sub 3/; NdGaO/sub 3/; YBa/sub 2/Cu/sub 3/O/sub 7- delta /; annealing; disordering; epitaxial YBa/sub 2/Cu/sub 3/O/sub 7-x/ films; exponential behavior; high oxygen pressure DC-sputtering; high temperature superconductors; intrinsic energy gap; microwave surface resistance; oxygen deficiency; oxygen-deficient film; oxygenated films; postannealing; Conductivity; Crystallization; Electromagnetic heating; Oxygen; Sputtering; Superconducting epitaxial layers; Superconducting microwave devices; Surface resistance; Temperature; X-ray diffraction;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233894

Filename

233894