Abstract
The main focus of the research was to correlate the microstructure with dielectric and magnetic properties of Bi1−x Ba x FeO3 samples. Bi1−x Ba x FeO3 samples (x = 0.1, 0.2 and 0.3) were synthesized by the conventional solid-state reaction method using nano-powders of Bi2O3, Fe2O3, and BaCO3. Thereafter, field emission scanning electron microscope and X-ray diffraction (XRD) techniques were used to examine the structure and phase of the samples. Phase analysis by XRD indicated that the single-phase perovskite structure was formed with possible increment in lattice parameter with increasing Ba doping. Complex permeability (\( \mu_{i}^{{\prime }} \) and \( \mu_{i}^{{{\prime \prime }}} \)) measured using impedance analyzer confirmed the increase in magnetic property with increasing Ba doping. Finally, dielectric constant (k) was analyzed as a function of temperature at different frequencies. Dielectric constant as high as 2900 was attained in this research for Bi0.8Ba0.2FeO3 sample due to reduction in leakage current at this composition.
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Acknowledgments
The authors are grateful to the Department of Glass and Ceramic Engineering (BUET) for the provided laboratory facilities. The authors also thank Dr. Abdul Gofur, BCSIR, Dhaka, for his support with the XRD analysis.
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Mahbub, R., Fakhrul, T., Fakhrul Islam, M. et al. Structural, Dielectric, and Magnetic Properties of Ba-Doped Multiferroic Bismuth Ferrite. Acta Metall. Sin. (Engl. Lett.) 28, 958–964 (2015). https://doi.org/10.1007/s40195-015-0279-8
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DOI: https://doi.org/10.1007/s40195-015-0279-8