Fabrication and properties of rf niobium-on-sapphire superconducting resonators

Journal Article · Thu Mar 01 04:00:00 EST 1979 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1135816· OSTI ID:6458305

Blair, D G; Hamilton, W O

Niobium-on-sapphire resonators have been constructed as sensor elements for accelerometers in gravitational wave antennae. In their present form the resonators constitute small simple sensor elements for a wide range of applications where displacements take place, such as seismometry, gravimetry, thermal expansion measurements, as well as gravitational wave antennae. Radio-frequency losses in the niobium-sapphire interface have been observed. These limit the resonator Q to less than 10/sup 5/ and show a strong power dependence. Several methods of fabrication of the niobium-on-sapphire circuits have been investigated. Complete details for construction are given. An accelerometer based on these resonators is described in an accompanying paper.

• Research Organization: Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803
• OSTI ID: 6458305
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 50:3; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
640106 -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELEROMETERS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANTENNAS
CHALCOGENIDES
CORUNDUM
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
FABRICATION
FILMS
GRAVITATIONAL WAVE DETECTORS
MEASURING INSTRUMENTS
METALS
MINERALS
NIOBIUM
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
RADIATION DETECTORS
REFRACTORY METALS
RESONANCE
RF SYSTEMS
SAPPHIRE
SUBSTRATES
SUPERCONDUCTING DEVICES
TRANSITION ELEMENTS