Abstract
Abstract Two types of multi-composition PZT composites whose configurations are parallel and series, respectively, were prepared by conventional ceramic processing. Their FR(LT)-FR(HT) phase transition behaviors were investigated and compared with that of single composition ceramic materials. The temperature ranges of FR(LT)-FR(HT) phase transition in multi-composition ceramic samples were wider than that in single composition ceramic samples. The former reached 16°C and 10°C, respectively, while the latter was only about 2°C. The peak values of pyroelectric current of composites decreased when the total area of samples remained unchanged, but they were still much larger than that of ordinary linear pyroelectric materials. The two types of multi-composition PZT composites were the candidates for pyroelectric sensor materials and can be used for heat-electric energy conversion.
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