Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Features of resonance absorption of longitudinal ultrasound in strained crystals KBr at temperature variations
Репозиторій DSpace/Manakin
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Features of resonance absorption of longitudinal ultrasound in strained crystals KBr at temperature variations
Інші назви:
Особливості резонансного поглинання поздовжнього ультразвуку у деформованих кристалах KBr при варіюванні температури
Тема:
Characterization and properties
Посилання:
Features of resonance absorption of longitudinal ultrasound in strained crystals KBr at temperature variations / A.M. Petchenko, G.A. Petchenko // Functional Materials. — 2007. — Т. 14, № 4. — С. 475-479. — Бібліогр.: 12 назв. — англ.
Дата:
2007
Переглядів:
535
Завантажень:
283
Анотація:
The frequency dependence of a dislocation damping decrement of ultrasound in KBr single crystals preliminary strained up to 1 % in the temperature range 77-300 K and frequency range 7.5-217.5 MHz has been investigated. The temperature course of the phonon viscosity coefficient B was determined, which is agreed both with the theory and experimental literature data. The effect of temperature-induced changes in the dislocation segment length on parameters of the resonance maximum and dynamic drag of dislocations by phonons has been revealed and considered.
