On the Anomalous Behavior of the Coersive Field of Dirty KDP Crystals

Abstract

It has been reported that in KDP crystals with very high tan δ=ε″⁄ε′ the coersive field shows anomalous behavior at a certain temperature range around T₀ which depends on the switching frequency. We suggest in this paper that this frequency dependence of T₀ is due to dynamical effect of defects present in such a crystal. We discuss two types of the dynamical defects in detail, and the activation energy of such defects is estimated to be about 2400 K.