Characterization of LiNbO3 crystals by line-focus-beam acoustic microscopy
- 10 June 1991
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 58 (23) , 2622-2624
- https://doi.org/10.1063/1.104813
Abstract
Line-focus-beam (LFB) acoustic microscopy is applied to quantitative characterization of piezoelectric LiNbO3 crystals to demonstrate the usefulness of this new analytical technique. Experimental relations between chemical composition ratios of Li/Nb and leaky surface acoustic wave (LSAW) velocities for 128°YX LiNbO3 wafers are determined. LSAW velocity measurements are carried out for commercial wafers obtained from a series of crystal growths. Small changes of 0.092% are detected due to the compositional variation. It is estimated that the ‘‘effective’’ congruent composition in the production line is 48.440 Li2O mol% with the density of 4647.4 kg/m3.Keywords
This publication has 8 references indexed in Scilit:
- Effect of Li/Nb Ratio on the SAW Velocity of 128°Y–X LiNbO3 WafersJapanese Journal of Applied Physics, 1987
- Growth and investigation of MgO-doped LiNbO3Journal of Crystal Growth, 1986
- Congruent Composition and Li‐Rich Phase Boundary of LiNbO3Journal of the American Ceramic Society, 1985
- Material Characterization by Line-Focus-Beam Acoustic MicroscopeIEEE Transactions on Sonics and Ultrasonics, 1985
- Increased optical damage resistance in lithium niobateApplied Physics Letters, 1984
- Optimum cut for rotated Y-cut LiNbO3crystal used as the substrate of acoustic-surface-wave filtersProceedings of the IEEE, 1976
- Nonstoichiometry and Crystal Growth of Lithium NiobateJournal of Applied Physics, 1971
- Determination of Elastic and Piezoelectric Constants for Crystals in Class (3m)The Journal of the Acoustical Society of America, 1967