Superconducting electronic-film structures. Semiannual report, 1 January-30 June 1984

Technical Report · Tue Jul 24 04:00:00 EDT 1984

OSTI ID:7109112

Braginski, A I; Gavaler, J R

Solid state epitaxial growth of NbN single crystals have now been achieved on (1, -1,0,2) sapphire. Results indicate that surface preparation is the most critical factor in obtaining epitaxy. Films of V-Si and Nb-Ge have been reactively magnetron sputtered and the A15 phase has been obtained at temperatures as low as 290 C, approximately 150 C lower than with dc diode reactive sputtering. A LEED study of Nb3Ir single crystal epitaxial substrates lead to in-situ surface processing procedure and showed that surface reconstruction is caused by oxygen impurity. Epitaxial, single crystal Nb films have been prepared on sapphire and MgO substrates. A glancing angle XPS study of Al{sub 2}O{sub 3} tunnel barriers and extremely thin amorphous Mo-Ge films demonstrated universality of significant thickness variation that affects tunnelling characteristics.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
• OSTI ID: 7109112
• Report Number(s): AD-A-215477/1/XAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CORUNDUM
CRYSTAL STRUCTURE
CRYSTALS
DIMENSIONS
DOCUMENT TYPES
ELEMENTS
EPITAXY
FILMS
GERMANIUM ALLOYS
IMPURITIES
IRIDIUM ALLOYS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MINERALS
MOLYBDENUM ALLOYS
MONOCRYSTALS
NIOBIUM ALLOYS
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PLATINUM METAL ALLOYS
PNICTIDES
PROCESSING
PROGRESS REPORT
REFRACTORY METAL COMPOUNDS
SAPPHIRE
SILICON ALLOYS
SPUTTERING
SUBSTRATES
SUPERCONDUCTING FILMS
SURFACE FINISHING
SURFACES
THICKNESS
TRANSITION ELEMENT COMPOUNDS
VANADIUM ALLOYS
VARIATIONS