Acoustic losses in a thick quartz plate at low temperatures

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
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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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
459312Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/I001085/1Physics and Astronomy