Thermal Effusivity of the Pb_0.88Ln_0.08Ti_0.98Mn_0.02O₃(Ln=La, Eu) Ferroelectric Ceramic System by Inverse Photopyroelectric Technique

Abstract

In this work, the thermal effusivities of Pb0.88Ln0.08Ti0.98Mn0.02O3 (Ln=La, Eu) ferroelectric ceramics are studied since it can be use as pyroelectric detectors. Photothermal techniques were used to determine thermal effusivity. The preparation of the ceramics was perform in our laboratory by using the oxide-mixing conventional method. It should be noticed that these ceramics were taken in an unpoled state. All measurements were made at room temperature.