Investigation of pyroelectric characteristics of 0.8 Pb (Zn1/3Nb2/3)O3 - 0.1 Pb TiO3 - 0.1 BaTiO3 ceramics with special reference to uncooled infrared detection

The pyroelectric characteristics for 0.8 Pb(Zn_1/3Nb_2/3)O₃ - 0.1 PbTiO₃ - 0.1 BaTiO₃ ceramics were investigated to determine the usefulness of this material as an uncooled infrared detector. Two successive phase transitions, changing the crystal symmetry from rhombohedral to tetragonal, and then to cubic on a heating process, were observed in the material. The results of measurements were compared with those of PLZT (8/40/60) and the Ca-Modified PbTiO₃, which are currently the favored materials for uncooled arrays. The results indicate that 0.8 PZN - 0.1 PT - 0.1 BT is a promising material for both transverse mode and pyroelectric CCD arrays.