Tunable pyroelectricity in LA-modified PZST antiferroelectric ceramics

The temperature dependence of pyroelectricity under de bias field was inves tigated in La-modified lead zirconate stannate titanate antiferroelectric c eramics. A strong pyroelectric response resulting from ferroelectric to ant iferroelectric phase transition was detected. By different external electri c fields, the magnitude and peak temperature of pyroelectric current were t unable within a wide temperature range from 5 degrees C to 100 degrees C. P yroelectric coefficient reached the order of 10(-7)similar to 10(-6) C/cm(2 ).K. The observed tunable pyroelectric characteristics and large pyroelectr ic coefficient make the PZST materials attractive for pyroelectric detector s.