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Acoustic resonances of relaxation nature in CsI single crystals in the temperature range 2–20 K

✍ Scribed by S.N. Smirnov; P.P. Pal-Val; V.D. Natsik

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
551 KB
Volume
442
Category
Article
ISSN
0921-5093

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✦ Synopsis

Acoustic relaxations in CsI single crystals are investigated in the temperature range 2-20 K at frequencies (1-7) × 10 5 Hz. The absorption peak found earlier at temperatures 3-5 K, which is caused by preliminary plastic deformation at room temperature, is studied in detail. A new relaxation resonance that corresponds to a thermally activated process with the activation energy U ≈ (6.1-8.9) × 10 -3 eV and the attempt frequency ν 0 ≈ 2 × 10 9 to 8 × 10 10 s -1 is revealed in the temperature interval 8-10 K.

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