Electrical properties of KTiOPO_4 single crystal in the temperature range from ― 100℃ to 100℃

摘要

The electrical property of a KTiOPO_4 single crystal was studied by means of a dielectric spectroscopy method in the temperature range from ― 100 to 100℃. Dielectric dispersion began at a temperature, T_S = - 80℃. It is believed that this dielectric dispersion is related to the ionic hopping conduction, which arises mainly from the jumping of K~+ ions. The activation energy concerned with hopping conduction is E_a ～ 0.20 eV above T_S. T_S = -80℃ can be the minimum temperature for the hopping K~+ ion.