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Erschienen in:
11.03.2021
Effect of sintering temperature on structural, dielectric, and electrical property studies of Bi4NdTi3FeO15 aurivillius ceramics
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 7/2021
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Abstract
The effect of sintering temperature on the structural, magnetic, dielectric, and electric properties of four-layered Bi4NdTi3FeO15 Aurivillius multiferroic ceramics was studied. The ceramics was prepared by conventional solid-state reaction. The Rietveld refined room temperature (RT) X-ray diffraction and Raman studies revealed that the samples exhibited an orthorhombic structure with A21am space group. The surface morphology studies indicated that the samples exhibited non-uniform and randomly oriented plate-like grains. The P–E hysteresis loops of the samples showed an unsaturated polarization even at a high field of 90 kV/cm, indicates weak ferroelectric at RT. Room temperature magnetization curves indicate weak antiferromagnetic nature with remanent magnetization ~ 4 memu/g. The M–H loops at low temperature 10 K showed the ferromagnetic nature. The temperature dependence of dielectric and impedance data showed a dielectric relaxation which could be ascribed to short-range movements of oxygen vacancies.