Abstract
In this work, BaFe12O19 (BaM) and its modified systems (by substitution of Ni and Ti) have been synthesized by solid-state reaction method. From Rietveld refinement of X-ray diffraction pattern, it is found that volume of unit cell increased slightly in case of modified systems. SEM images provided the information about the microstructure of BaM and its modified systems. The electric, magnetic and optical properties have been carried out with the help of complex impedance spectroscopy, VSM and UV spectrum, respectively. From electrical analysis, it is perceived that Ni-substitution system has shown co-contribution of grain and grain boundary effect due to increases of grain size. The M–H loops are explored that, with substitution of Ni and Ti both Ms and Hc are decreased. From the variation of band gap (Eg), it is observed that Eg has been significantly decreased with substitution (least for Ni-substitution).
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The authors want to acknowledge Prof. D. Topwal, Institute of Physics, Bhubaneswar, Odisha, for magnetic study.
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Nayak, D., Pattanayak, R., Raut, S. et al. Study of structural, electrical, magnetic and optical properties of BaFe12O19 and its modified systems with Ni and Ti. Appl. Phys. A 124, 162 (2018). https://doi.org/10.1007/s00339-017-1524-y
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DOI: https://doi.org/10.1007/s00339-017-1524-y