The dislocation unpinning from stoppers in KBr single crystals сaused by elastic stresses and temperature

• Published in: Вопросы атомной науки и техники
• Date: 2019
• Main Authors: Petchenko, О.M., Petchenko, G.О., Boiko, S.M., Litvinenko, A.S., Kоlyada, O.Yu.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2019
• Subjects: Physics of radiation damages and effects in solids
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/194929
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: The dislocation unpinning from stoppers in KBr single crystals сaused by elastic stresses and temperature / О.M. Petchenko, G.О. Petchenko, S.M. Boiko, A.S. Litvinenko, O.Yu. Kоlyada // Problems of atomic science and technology. — 2019. — № 2. — С. 20-24. — Бібліогр.: 45 назв. — англ.

The impulse echo-method was applied to study, in the temperature range 300…435 K and at 7.5 MHz frequency, the dislocation attenuation αd(σ) in KBr crystals as a function of static loading in the quasi-elastic strain range. It has been found that the temperature increase at stresses σ < σy (σy is...