Ultrasonic velocity and attenuation in Pb-phosphate glass

Ultrasonic velocity and attenuation have been measured in six different samples of Pb-phosphate glass at a frequency of 10 MHz in the temperature range 80 to 300 K. The velocities, both longitudinal and transverse, increased monotonically with decreasing temperature. Temperature variation of attenua...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1997-12, Vol.221 (2), p.265-273
Main Authors: Paul, A, Ghosh, U.S, Basu, C
Format: Article
Language:English
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Summary:Ultrasonic velocity and attenuation have been measured in six different samples of Pb-phosphate glass at a frequency of 10 MHz in the temperature range 80 to 300 K. The velocities, both longitudinal and transverse, increased monotonically with decreasing temperature. Temperature variation of attenuation showed a high temperature relaxation peak in each sample. The temperature dependence of the attenuation is interpreted in terms of a thermally activated relaxation process. On the other hand, the combined effect of relaxation and anharmonicity is considered to explain the variation of velocity with temperature.
ISSN:0022-3093
1873-4812
DOI:10.1016/S0022-3093(97)00313-X