Title :
Viscosity tensor components of the langatate and langasite
Author :
Sergeev, F.O. ; Alekseev, S.G. ; Kotelyanskii, I.M. ; Mansfeld, G.D. ; Polzikova, N.I.
Author_Institution :
Kotelnikov´´s Inst. of Radioengineering & Electron. RAS, Moscow
Abstract :
Full sets of components of viscosity tensor for langasite (La3Ga5SiO14) and langatate (La3Ga5.5O14Ta0.5) were obtained. This study was done using the method of composite acoustic resonator (HBAR) spectroscopy. Using these data it is possible to evaluate the attenuation coefficient for arbitrary directions of the propagation and polarization of acoustic waves in single crystals of langatate and langasite.
Keywords :
acoustic measurement; acoustic resonators; acoustic wave absorption; acoustic wave propagation; gallium compounds; lanthanum compounds; tensors; viscosity measurement; HBAR spectroscopy; La3Ga5.5O14Ta0.5; La3Ga5SiO14; acoustic wave attenuation coefficient evaluation; acoustic wave polarization; acoustic wave propagation; composite acoustic resonator; langasite crystal; langatate crystal; viscosity tensor component; Acoustic materials; Acoustic measurements; Acoustic waves; Attenuation; Crystalline materials; Loss measurement; Polarization; Spectroscopy; Tensile stress; Viscosity; HBAR; attenuation; resonator; viscosity;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0178
