Phonon Hole Burning in some Kinds of Piezoelectric Powder

Abstract
We have studied phonon hole burning phenomenon. According to the plastic deformation model proposed by us, some characteristics of holes depend on the amplitude of resonant oscillation exited and the crystal condition of specimen. We studied the effect of heat treatment for the particles on holes. In NH₄H₂PO₄ specimen, the increase of decay time for oscillation and larger holes were found. No definite change was detected in the decay time or the shape of holes in LiNbO₃ or KH₂PO₄. The shapes of holes and the positions of the hole peak in the NH₄H₂PO₄ and LiNbO₃ powders were found to be different from each other. This result suggested that dislocations as plastic deformation were concerned with hole formation.