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- W3199895178 abstract "Acoustic attenuation of high frequency waves like ultrasonic waves is investigated in this study. Attenuation of both the longitudinal and shear waves of frequency 300 MHz and 426 MHz propagating through pure semiconductor materials, like germanium and silicon is computed within the temperature range 73-293K and a comparison is drawn between them. Second and third order elastic constants of the material and the temperature dependent non-linearity parameter DL and DS are used to calculate attenuation. Study reveals that attenuation of the high frequency waves is highly frequency and temperature dependent. The Akhieser losses leading to attenuation in pure semiconductors is attributed mainly to phonon-phonon interactions within the solids. High frequency acoustic waves are found to be more attenuated in germanium as compared to silicon." @default.
- W3199895178 created "2021-09-27" @default.
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- W3199895178 date "2021-01-01" @default.
- W3199895178 modified "2023-09-26" @default.
- W3199895178 title "High frequency acoustic attenuation in pure semiconductors: A comparative study" @default.
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- W3199895178 doi "https://doi.org/10.1063/5.0060888" @default.
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