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Title: | Ultrasonic investigation of the relaxation time and the dynamic, relaxed, and unrelaxed elastic moduli in ZnSe:Cr |
Authors: | Gudkov, V. V. Lonchakov, A. T. Sokolov, V. I. Zhevstovskikh, I. V. |
Issue Date: | 2007 |
Publisher: | AIP Publishing |
Abstract: | The temperature dependence of the phase velocity and absorption of ultrasound propagating along the [110] axis in a ZnSe crystal doped with Cr2+ ions is investigated in the frequency interval 32-158 MHz. It is found that the absorption peak and anomalies of the phase velocity observed in the temperature interval 10-20 K are of a relaxation nature. The temperature dependence of the relaxation time and the relaxed (isothermal) and unrelaxed (adiabatic) elastic moduli Cl = 1 2 (C11 + C12 +2 C44) are recovered from the data. Oscillations of the amplitude and phase of the signal are observed at 32 MHz. An interpretation of this phenomenon is proposed. © 2007 American Institute of Physics. |
ISSN: | 1063-777X 1090-6517 |
DOI: | 10.1063/1.2719955 |
SCOPUS: | 34247342664 |
WoS: | 000245900300017 |
Appears in Collections: | Научные публикации, проиндексированные в SCOPUS и WoS |
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