Abstract
ABSTRACTThe polycrystalline samples of (1−x)BiFeO3-xCaCu3Ti4O12 (x = 0, 0.05, 0.10 and 0.15) were synthesized by solid state reaction method followed by rapid liquid phase sintering. The effects of CaCu3Ti4O12 (CCTO) doping on the microstructure, dielectric and magnetic properties of BiFeO3 (BFO) ceramics were studied by changing CCTO concentrations. The XRD analysis reveals that that a little amount of CCTO as a solid solution in the BFO phase leads to expanding the lattice, no phase transition has occurred in the doping content range, but CCTO doping induces the crystal structure distortion. Impedance spectroscopy results show that the doped BFO ceramics have a broadband stability of the dielectric constant and dielectric loss on frequency, the CCTO doping can improve the dielectric constant and reduce dielectric loss of BFO. It is also observed that an increase in CCTO doping concentration in BFO can improve the magnetic properties of BFO.
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