Grib, A., Heinert, D., Nawrodt, R., Schwarz, C., Grosse, V., Seidel, P., Martin, I. , Rowan, S. and Hough, J. (2010) Acoustic losses in a thick quartz plate at low temperatures. Journal of Applied Physics, 107(1), Art. 013504. (doi: 10.1063/1.3275425)
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Abstract
We have shown that thermoelastic losses give the significant contribution to the total mechanical damping in the low loss quartz even for the bulk samples if the thickness of the sample is smaller than other dimensions. We have developed a model that describes experimental data of mechanical losses in a round quartz plate with the diameter 7.48 cm and the thickness 1.2 cm at temperatures 5–25 K in the range of eigenfrequencies 11–300 kHz. The model takes into account both the contribution of thermoelastic losses and the contribution due to the interaction of the acoustic wave with thermal phonons (Akhieser damping). Thermoelastic processes determine losses below 120 kHz. At larger eigenfrequencies, the Akhieser damping dominates.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Rowan, Professor Sheila and Martin, Dr Iain and Nawrodt, Dr Ronny and Hough, Professor James |
| Authors: | Grib, A., Heinert, D., Nawrodt, R., Schwarz, C., Grosse, V., Seidel, P., Martin, I., Rowan, S., and Hough, J. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Research Centre: | College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research |
| Journal Name: | Journal of Applied Physics |
| Publisher: | American Institute of Physics |
| ISSN: | 0021-8979 |
| ISSN (Online): | 1089-7550 |
| Published Online: | 05 January 2010 |
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