Effect of lithium ferrite on ferroelectric and magnetic characteristics of barium titanate for high frequency applications

Abstract

The composite of [Formula: see text]–[Formula: see text] was prepared by mixing lithium ferrite and barium titanate. The samples were sintered at 1150[Formula: see text]C for optimum parameters at chemical reaction between ferrite–ferroelectric interfaces. The presence of ferroelectric nature was detected by X-ray diffraction (XRD) and homogenous coarseness nature was confirmed by scanning electron microscope (SEM). Dielectric measurement for the samples show the superimposition behavior of both magnetic and electric phases in the composite samples. This fact was further supported by magnetic behavior from vibrating sample magnetometer (VSM) and polarization from PE loops. Magnetic measurements show the increase in coercivity and saturation magnetization with increase in ferrite content. PE loops suggests that coercivity increases initially and then decreases for rise in ferrite content suggesting the trend of leaking factor in the samples.