Title :
Acoustic waves measurements on SNGS crystals and determination of material constants
Author :
Chilla, E. ; Kunze, R. ; Weihnacht, M. ; Bohm, J. ; Heimann, R.B. ; Hengst, M. ; Straube, U.
Author_Institution :
Vectron Int., Teltow, Germany
Abstract :
We have determined the material parameters of SNGS (Sr3NbGa3Si2O14). The elastic material constants were derived from bulk acoustic wave (BAW) measurements and surface acoustic wave (SAW) measurements. Starting with the elastic tensor determined from BAWs we optimized the data set by investigating the influence of the elastic tensor components on the angular dispersion of SAW. The electromechanical coupling coefficient was derived from SAW measurement on open and short-circuited Y-cut. Additionally we measured dielectric parameters.
Keywords :
acoustic dispersion; acoustic wave propagation; acoustic wave velocity measurement; elastic constants; electromechanical effects; gallium compounds; niobium compounds; strontium compounds; surface acoustic waves; BAW measurements; SAW measurements; Sr3NbGa3Si2O14; Sr3NbGa3Si2O14 crystals; acoustic waves measurements; angular dispersion; bulk acoustic wave measurements; elastic tensor; electromechanical coupling coefficient; material constants; material parameters; open circuited Y cut; short circuited Y cut; surface acoustic wave measurements; Acoustic devices; Acoustic materials; Acoustic measurements; Acoustic waves; Crystalline materials; Crystals; Dielectric measurements; Surface acoustic waves; Temperature; Tensile stress;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293363
