Non-string mechanism of dissipation phenomena in zinc single crystals

V.V.Tokiy, I.K.Nosolev*, V.Ya.Platkov**

Donbass State Academy of Building and Architecture, 2 Derzhavin Str., 86123 Makeevka, Ukraine
*A.Galkin Donetsk Physico-Technical Institute, National Academy of Sciences of Ukraine, 72 R.Luxembourg Str., 83114 Donetsk, Ukraine
**Kharkiv State Technical University of Farming, 44 Artem Str., 61002 Kharkiv, Ukraine

Received April 6, 1999

Amplitude dependences of internal friction delta and the elasticity modulus defect DELTAM/M have been measured in parallel in zinc single crystals of three different orientations. The amplitude dependence of the ratio of the mentioned quantities, r, has been obtained. Consideration of experimental data thus obtained and comparison to the Granato-Lucke theory allowed to establish the non-string mechanism contribution to non-elastic phenomena and to explain the anomalous behaviour of the ratio r.

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