The structure perfection studies of LiCaAlF6 crystals by laser acoustics technique

E. B Zheleva; Желева Е. Б; V. V Semashko; Семашко В. В; A. A Shaveliev; Шавельев А. А; O. A Morozov; Морозов О. А; V. M Kyashkin; Кяшкин В. М; A. A Karabutov; Карабутов А. А; Yu. P Brodnikovsky; Бродниковский Ю. П

doi:10.31857/S0130308223080109

The structure perfection studies of LiCaAlF6 crystals by laser acoustics technique

Authors: Zheleva E.B¹^,2, Semashko V.V¹^,2, Shaveliev A.A¹, Morozov O.A¹^,2, Kyashkin V.M¹, Karabutov A.A², Brodnikovsky Y.P²
Affiliations:
1. Kazan (Volga region) Federal University
2. Kazan E. K. Zavoisky Physical-Technical Institute
Issue: No 8 (2023)
Pages: 71-73
Section: Articles
URL: https://journals.rcsi.science/0130-3082/article/view/141570
DOI: https://doi.org/10.31857/S0130308223080109
EDN: https://elibrary.ru/DZSGPO
ID: 141570

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Abstract

The acoustic properties of LiCaAlF6 crystals and the annealing procedure impact on them were studied. The velocities of longitudinal and shear ultrasonic waves along the direction of the optical c-axis of the crystals were measured by laser acoustics, and the mechanical constants were determined: modules of elasticity, all-round compression, shear, and Poisson's ratio. It has been established that the attenuation coefficient of ultrasonic waves in the 1-15 MHz frequency range can serve as a characteristic of the optical perfection of the crystals. The effect of ultrasonic annealing of LiCaAlF6 crystal samples under prolonged exposure by pulsed ultrasound was discovered.

Keywords

laser crystals, Laser acoustics, defectoscopy, attenuation coefficient, Ultrasonic annealing

References

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The structure perfection studies of LiCaAlF6 crystals by laser acoustics technique

Full Text

Abstract

Keywords

About the authors

E. B Zheleva

V. V Semashko

A. A Shaveliev

O. A Morozov

V. M Kyashkin

A. A Karabutov

Yu. P Brodnikovsky

References

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