Fabrication and properties of rf niobium-on-sapphire superconducting resonators
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, th...
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| Published in | Review of scientific instruments Vol. 50; no. 3; p. 279 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.03.1979
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| Online Access | Get more information |
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| Summary: | 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(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. |
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| ISSN: | 0034-6748 |
| DOI: | 10.1063/1.1135816 |