High-frequency properties of Tl-based superconductors deposited onto large-area metallic substrates

Conference · Thu Feb 28 23:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5876956

Cooke, D W; Arendt, P N; Gray, E R; Mayer, A; Brown, D R; Elliott, N E; Reeves, G A ^[1]; Portis, A M ^[2]

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1. Los Alamos National Lab., NM (United States)
2. California Univ., Berkeley, CA (United States)

This paper reports on microwave surface resistance measurements made on large-area (11.4 cm{sup 2}) Tl-Ba-Ca-Cu-0 thick films ({approximately}10 {mu}m) which were magnetron sputtered onto oriented Ag alloy (Consil 995) substrates. Initial films were prepared by depositing a BaF{sub 2} buffer layer between the superconducting film and the substrate to control the film/substrate interaction; however, films exhibiting the best microwave properties were prepared without a buffer layer. Surface resistance measurements were made by replacing the end wall of an 18-GHz Cu cavity (TE{sub 011} mode) with the superconducting film.

• OSTI ID: 5876956
• Report Number(s): CONF-900944--
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:2; ISSN IEMGA; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM FLUORIDES
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
FILMS
FLUORIDES
FLUORINE COMPOUNDS
FREQUENCY RANGE
GRAIN ORIENTATION
HALIDES
HALOGEN COMPOUNDS
LAYERS
MAGNETIC FIELDS
MAGNETRONS
MICROSTRUCTURE
MICROWAVE EQUIPMENT
MICROWAVE SPECTRA
MICROWAVE TUBES
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SILVER ALLOYS
SPECTRA
SPUTTERING
SUBSTRATES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SURFACE PROPERTIES
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS