Premium
Acoustic Studies of LiKSO 4 Crystals in the 290 to 930 K Region
Author(s) -
Borisov B. F.,
Charnaya E. V.,
Radzhabov A. K.
Publication year - 1994
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221810208
Subject(s) - transverse plane , condensed matter physics , hysteresis , hexagonal crystal system , materials science , transverse wave , absorption (acoustics) , phase velocity , optics , attenuation coefficient , atmospheric temperature range , phase (matter) , physics , wave propagation , chemistry , crystallography , thermodynamics , structural engineering , quantum mechanics , engineering
The temperature dependence of velocity and absorption coefficient of longitudinal and transverse acoustic waves are studied for LiKSO 4 crystals within the temperature range 290 to 930 K. Anomalies in the velocity and absorption values are detected near 708 and 743 K. The observed considerable hysteresis of velocity for the longitudinal wave propagating along the y‐axis of the hexagonal structure at room temperature, suggests the presence of an intermediate incommensurate phase. A similar hysteresis was also observed for the transverse wave, propagating along the x‐axis and polarized along the y‐axis.