Abstract
The ionic conductivity of potassium titanyl phosphate (KTiOPO4:KTP) single crystals along the a, b and c-axes has been investigated in detail at the temperature range 300∼1200 K. The anisotropic behavior of ionic conductivity of KTP single crystal can be well explained by the consideration of the conduction paths of the K+ ions and the size of the bottle necks deduced from the crystal structure of the KTP.