Pyroelectric effect in KTiOPO4 and family crystals with monodomain and domain patterned structures

The pyroelectric effect was studied in KTiOPO4 and isomorphic ferroelectric crystals in a wide temperature range including the transition region from a superionic state to a dielectric state. The developed method of pyroelectric current monitoring has allowed the fabrication of various periodic and quasi-periodic ferroelectric domain configurations of high quality in KTiOAsO4, KTiOPO4, RbTiOAsO4 and RbTiOPO4 crystals for diverse nonlinear optical converters.