SOUND-WAVES IN POLYDOMAIN FERROELECTRICS

Some theoretical and experimental results concerning propagation, gene ration and interaction of sound waves in polydomain ferroelectrics (le ad germanate and gadolinium molibdate) are presented. The following su bjects are considered: sound reflection from a plane domain wall; seco nd acoustic harmonic generation in polydomain ferroelastic; sound scat tering on the system of cylindrical domains; sound propagation along r egular system of plane domain walls; domain-acoustic transducers and t heir applications; investigation of domain 'memory' by acoustic method s; acoustic emission in switching process.