Nonlinear relaxational ultrasonic absorption in metallic glasses
- 1 January 1984
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 45 (15) , 747-753
- https://doi.org/10.1051/jphyslet:019840045015074700
Abstract
We have developed a theory of intensity-dependent ultrasonic relaxational absorption in amorphous metals (metallic glasses). The relaxational absorption is due to the modulation of the interlevel spacing of the two-level systems by the periodic strain field of acoustic wave. The nonlinearity of the absorption coefficient appears to be essential if the amplitude of the modulation of the interlevel spacing exceeds kTKeywords
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