Email this article Anomalous Elastic and Inelastic Properties of the Cox(CaF2)100 –x Nanogranular Composites
- Authors: Tarasov D.P.1
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Affiliations:
- Military Educational and Scientific Center of Air Forces, Zhukovsky and Gagarin Air Force Engineering Academy
- Issue: Vol 64, No 6 (2019)
- Pages: 848-852
- Section: Physical Science of Materials
- URL: https://ogarev-online.ru/1063-7842/article/view/203579
- DOI: https://doi.org/10.1134/S1063784219060215
- ID: 203579
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Abstract
Elastic (G) and inelastic (Q–1) properties of the Cox(CaF2)100 –x (x = 41–84 at %) nanocomposites fabricated with the aid of ion-beam sputtering are studied in a temperature interval of 170–750 K. Maximum internal friction related to hopping of Co atoms inside metal granules is revealed at a temperature of 227 K. It is shown that the maxima increase with increasing concentration of metal phase. A noticeable increase in dependence Q–1(T) at a temperature of greater than 675 K is caused by diffusion of vacancies in the Co granules under geometrical confinements.
About the authors
D. P. Tarasov
Military Educational and Scientific Center of Air Forces, Zhukovsky and Gagarin Air Force Engineering Academy
Author for correspondence.
Email: demetriys@mail.ru
Russian Federation, Voronezh, 394064
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