Abstract
Polycrystalline MgFeTiO4 ceramic is prepared using a solid-state reaction route. The structural, vibrational, morphology, and electrical characteristics of the compound are studied. Crystal structure and phase analysis results suggest that MgFeTiO4 has a cubic spinel structure corresponding to the Fd3m space group. Fourier transform infrared (FTIR) and Raman spectroscopy indicate that Mg‒O, Fe‒O, and Ti‒O bonds are present in the sample. X-ray photoelectron spectroscopy study suggests the valence state of iron (Fe); thus, the formation of MgFeTiO4 is confirmed. The morphology and compositional analyses are done by field emission scanning electron microscopy and high-resolution transmission electron microscopy. The electrical and dielectric behaviors of the sample are studied at various temperature ranges. The dc conductivity of 5.68 × 10−4 S cm−1 is obtained at 300 °C, which is higher compared to LiFeTiO4. The activation energy is estimated and observed two different temperature-dependent conductivity regions.
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Singh, R., Biswas, K. Synthesis optimization and investigation on electrical properties of Fe+2-doped Mg2TiO4 ceramics for energy storage. J Mater Sci: Mater Electron 31, 12434–12443 (2020). https://doi.org/10.1007/s10854-020-03790-0
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DOI: https://doi.org/10.1007/s10854-020-03790-0