SYNTHESIS, STRUCTURAL, DIELECTRIC AND MAGNETIC STUDIES OF La DOPED 95BFO - 5BT CERAMICS
Lanthanum doped 95BiFeO3–5BaTiO3 (95BLFO–5BT) multiferroic ceramic was prepared by a PVA Sol-Gel method. A deep study of dielectric properties of La doped 95BiFeO3–5BaTiO3 (95BFO–5BT) ceramics with the help of comprehensive analysis of temperature and frequency dependent dielectric behavior, ac impedance and magnetodielectric (MD) properties is reported in this paper. We have reported nano-crystalline, single phase microstructure of mixedperovskite 95BLFO–5BT compound by scanning electron microscopy (SEM). XRD studies showed secondary phase formation in synthesis due to unstable behavior of Bi and Fe charge fluctuation. Dielectric properties of 95BLFO–5BT ceramics were studied at various temperature and frequency. It was also found that doping of 95BiFeO3–5BaTiO3 by Lanthanum improved dielectric and ferromagnetic properties. The dielectric constant was found to be very high (εr′ > 103, for T > 150 0C), whereas remnant polarization (Pr) was found to be > 7μC/cm2.
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