Resonance Phenomenon and Structural Properties of Fe Substituted Pzt Ceramics Prepared by Sol-Gel Method

In this paper, Pb۱-xFex(Zr۰.۵۲Ti۰.۴۸)O۳ (PFZT) nanopowders, with x from ۰.۰۰ up to ۰.۲۰, were synthesized by using the sol-gel method. The PFZT samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and impedance spectroscopy. According to the experimental results, PFZT combines rhombohedral and tetragonal symmetries for all the samples without a change in phase structure. The SEM investigation indicated that the grains are homogeneous with regular form and the average grain size of PFZT ceramics changed with Fe concentration. The dielectric characterizations show that the dielectric permittivity increases with increasing temperature, and the Fe amount shifts down the temperature of transition. Moreover, a dielectric resonance phenomenon is observed for all the PFZT ceramics.

کلیدواژه ها:

Pb۱-xFex(Zr۰.۵۲Ti۰.۴۸)O۳ ، X-ray diffraction ، Raman spectroscopy ، dielectric permittivity