Abstract
BaFe0.5Nb0.5O3 (BFN) ceramics has been prepared using a rapid process where the powder was synthesised using mechanical milling of the components then consolidated by spark plasma sintering (SPS) for 5 min at 1100 °C. X-ray diffraction results confirmed the pure cubic phase of the prepared SPS BFN ceramic. The average grain size as measured by SEM analysis was ~300 nm. Complex impedance measurements revealed giant dielectric constant (ε′ ~ 2.3 × 104) and low dielectric loss (tanδ ~ 0.48) for the SPS BFN ceramic at room temperature and 1 kHz. Two thermally activated relaxation peaks were observed in the spectra of imaginary part of modulus (M″). These relaxations were attributed to the Debye-like relaxation process in grains (at high frequency and low temperature) and non-Debye Maxwell-Wagner (M-W) polarization effect at grain-boundary (at low frequency and high temperature).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
