In the development of the pyroelectric infrareal detector , the single crystal pyroelectrics ispaid great attention due to its excellent characters in the pyroelectric coefficient i ,dielectric con- stont e and dielectric loss tangy. But the production of the single crystal material needs the complexprocess , long cycle and great expenses ,and it can not withstand the high power radiation. So ,itsapplications are limited , and several polycrystalline pyroelectric materials are studied and devel- oped. PZT (lead zirconate titanate) is a pyroelectric material that can overcome the above weak- nesses of the single crystal material and possesses the resistance to heat , damp and oxidation.Heance ,its application fileds are very wide.
"PBZT infrared material and detector", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21041R (30 August 1993); doi: 10.1117/12.2298495; https://doi.org/10.1117/12.2298495