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

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

745

Lastpage

748

Abstract

Full sets of components of viscosity tensor for langasite (La₃Ga₅SiO₁₄) and langatate (La₃Ga_5.5O₁₄Ta_0.5) 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; La₃Ga_5.5O₁₄Ta_0.5; 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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ULTSYM.2008.0178

Filename

4803624