Fabrication and Josephson properties of Nb$sub 3$Ge

Conference · Sat Mar 01 04:00:00 EDT 1975 · IEEE Trans. Magn., v. MAG-11, no. 2, pp. 883-884

OSTI ID:4094442

Laibowitz, R B; Tsuei, C C; Cuomo, J C; Ziegler, J F; Hatzakis, M

Sputtering techniques were used to fabricate Nb$sub 3$Ge films on amorphous substrates which exhibit superconductivity up to about 21$sup 0$K. Of the many sputtering parameters that can be varied, the most important appear to be target geometry, target composition, and substrate temperature. Initial results of composition analysis indicate that a Ge-rich phase nucleates during the initial stages of the deposition. Josephson microbridges were fabricated from these films, and microwave-induced steps in the I-V curves were observed in micron-sized bridges. An interpretation of the criticality of the bridge size in terms of a vortex state is given. (auth)

• Research Organization: IBM Zurich Lab.
• NSA Number: NSA-33-017130
• OSTI ID: 4094442
• Conference Information: Journal Name: IEEE Trans. Magn., v. MAG-11, no. 2, pp. 883-884
• Country of Publication: United States
• Language: English

Related Subjects

*SUPERCONDUCTING FILMS-- JOSEPHSON EFFECT
420201* --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
CHEMICAL COMPOSITION
ELECTRICAL PROPERTIES
GEOMETRY
GERMANIUM ALLOYS
INTERMETALLIC COMPOUNDS
MICROWAVE RADIATION
N42220* --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
NIOBIUM BASE ALLOYS
SPUTTERING
SUBSTRATES
TARGETS
TEMPERATURE DEPENDENCE