Torsional oscillator for internal friction data at 100 kHz
- 1 August 1989
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 60 (8), 2706-2710
- https://doi.org/10.1063/1.1140645
Abstract
We describe a method for measuring the internal friction of solids at low temperatures. Our design uses a composite oscillator vibrating in torsion at 100 kHz. The oscillator makes good thermal contact to the cryostat while maintaining a low background loss of Q−1≂2×10−6 at 2 K. The usefulness of the design is demonstrated by data for BaF2 and a‐SiO2 from 2 to 300 K.Keywords
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