LOW-TEMPERATURE MIXED SINTERING OF PB(ZR1-XTIX)O-3-PB(ZN1 3NB2/3)O-3 CERAMICS AND THEIR PYROELECTRIC PROPERTIES/

Low-temperature mixed sintering in the preparation process of Pb(Zr1-x Tix)O-3-Pb(Zn1/3Nb2/3)O-3 ceramics has been examined. Dense composite ceramics having z = 0.02, 0.03 and 0.04 with fine grains were obtained at firing temperatures from 900 degrees C to 950 degrees C by adding PbO as a lower-melting-point sintering aid. The pyroelectric coefficie nt of this mixed sintered ceramic fired at 900 degrees C was above 60 nC/(cm(2) . K) in the temperature range of 15 degrees C to 50 degrees C. These low-temperature mixed sintering pyroelectric materials are ve ry promising for use in the fabrication of highly sensitive infrared d etectors.