Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-437-C8-440
Determination of Some Complex Elastic and Electromechanical Properties of KDPU. Straube and H. Beige
Martin-Luther-Universität Halle-Wittenberg, Fachbereich Physik, Friedemann-Bach-Pl. 6, 06108 Halle/Saale, Germany
The described method allows the determination of velocity and attenuation variations introduced by low frequency alternating stresses and electric fields. Uniaxial stress is produced with a high load piezoelectric actuator and controlled with a strain gauge bridge. A modified impulse echo overlap system with a computer controlled sampling oscilloscope permits the measurement of very small effects. Results for Potassium Dihydrogen Phosphate (KDP) near the phase transition at 123 K are presented and discussed.
© EDP Sciences 1996