DETERMINATION OF ALL OF THE ELECTROELASTIC CONSTANTS OF LiNbO_3 CRYSTALS
Shi Zhong-jian, Zhiwei Wang · 1980
The present work discusses the measuring method of all of the elastic, piezoelectric and dielectric constants of LiNb03 crystals (briefly called as LN). We have given in all 56 data of the elastic, piezoelectric and dielectric constants and some of the mechanicelectric coupling coefficients of our LN. The value of K31 had been measured to be 0.038, and have recommended that the value of Ce14 should be determining by means of the +35°Y rotational plate, its value is 0.088 ×10~(11) N/m2. The two data would have an influence up the last determination of all of the elastic, piezoelectric and dielectric constants of LN. Captions of Figures: 1. Schematic diagram of thickness vibrations of piezoelectric plates; 2. 0°2-cut plates; 3. 0°x-cut plates; 4. 0°y-cut plates; 5. zx-cut plates; 6. Block diagram of measuring system I; 7. Block diagram of measuring system II; 8. Transmission network. Captions of Tables; 1. Size of measurable samples; 2. Electro-elastic constants of LN crystal; 3. Measuring scheme of electro-elastic constants for LN crystal; 4. Calculation formulas of Electro-elastic constants for LN crystal.