Glass Sintering Aid Effect on Magnetic and Dielectric Properties of YFeO3 Ceramics

Abstract

YFeO3 (YFO) and optimized glass wt% [0.5Li2O-0.5K2O-2B2O3 (LKBO) and BaO-Bi2O3-B2O3 (BBBO)] as a sintering aid in YFO ceramics were fabricated using fine powders prepared from sol-gel technique. Pure YFO and glass sintering aid added into YFO ceramics show orthorhombic crystal structure, confirmed by Rietveld refinement with the help of X-ray powder diffraction data. Scanning electron microscopy study revealed that the glass sintering aid added into YFO ceramics shows a higher average grain size than that of YFO ceramic. X-ray photoelectron spectroscopy was employed to confirm the presence of each atom/ion/element and their oxidation number in their respective samples. Using the Archimedes method, the density of the each ceramic sample was estimated. The BBBO glass sintering aid added into YFO exhibited a higher maximum magnetization value (2.82 emu g−1) compared to that of LKBO added into YFO (2.51 emu g−1) as well as pure YFO (1.53 emu g−1) ceramics. BBBO glass sintering aid added into YFO ceramic shows a higher dielectric constant, lower dielectric loss, and lower conductivity compared to LKBO added into YFO as well as pure YFO ceramics. In conclusion, improved magnetic and dielectric response of BBBO glasses added into YFO ceramic is a potential candidate for different dielectric-magnetic based applications.