Structural and Dielectric Properties of Gd doped Bismuth Ferrite-Lead Titanate

摘要

0.5BiGd_xFe_(1-x)O_3-0.5PbTiO_3 with x=0.05, 0.10, 0.15, 0.20 composite was prepared by mixed oxide method. Structural characterization was performed by X-ray diffraction and studied that the materials show tetragonal structure at room temperature for all concentration of Gd. Studies of dielectric properties (ε_r and tanδ) of the above compound at different frequencies in a wide range of temperature （25°-500°C） with an impedance analyser revealed that the dielectric constant increases with increase in Gd concentration as well temperature and the compound do not have any dielectric anomaly in the studied frequency and temperature range.