Abstract
For the present work, the magnetoelectric (ME) composites with composition 0.05 Ni0.8Zn0.2Fe2O4 - 0.95 Ba0.9-3x/2Sr0.1LaxTiO3(NZF-BSLT) with x = 0, 0.01and 0.02 were synthesized by conventional solid state reaction route. The existence of both phases was confirmed by the X-Ray diffraction (XRD) technique. The dielectric properties such as dielectric constant and dielectric loss were measured as a function of temperature at different frequencies. P-E hysteresis loops and M-H hysteresis loops confirm the ferroelectric and ferromagnetic nature of the composite samples.La substitution in ferroelectric phase results in significant improvement in properties of composite samples. The investigated composites seem to be very attractive for multiple state memory devices where data can be stored both as polarization (P) and magnetization (M).
Highlights
In the recent years, there is renewed scientific interest in the study of the magnetoelectric materials because of their potential for applications as multifunctional devices
From the figure it is observed that all X-Ray diffraction (XRD) patterns exhibit the characteristic peaks of both phases i.e. (110) for ferroelectric phase and (311) for ferrite phase and confirms the presence of both phases
From XRD pattern it is clear that theintensity of peaks corresponding to ferrite phase is very small that may be due to very low concentration of ferrite phase in composite samples
Summary
There is renewed scientific interest in the study of the magnetoelectric materials because of their potential for applications as multifunctional devices. For the present work Ni-Zn ferrite was selected as ferrite phase because of its high resistivity, high magnetic permeability, low dielectric loss, high Curie temperature, high mechanical hardness, low porosity, reasonable cost and chemical stability which helps to increase the efficiency of ME conversion factors of composite samples [15,16]. From literature it was found that the properties of these composites have been studied only by changing the ratio of ferrite phase and ferroelectric phase.
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