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Journal of Electroceramics

, Volume 42, Issue 1–2, pp 47–56 | Cite as

Magnetic and dielectric studies of barium hexaferrite (BaFe12O19) ceramic synthesized by chemical route

  • Atendra Kumar
  • Shiva Sundar Yadava
  • Pooja Gautam
  • Ankur Khare
  • K. D. MandalEmail author
Article

Abstract

Barium hexaferrite BaFe12O19 (BHF) ceramic was synthesized by chemical route on sintering at 1050 °C for 12 h. The synthesized material was characterized by XRD, SEM, AFM and TEM analysis. Metal oxide stretching frequencies corresponding to Fe-O, Ba-O, and Fe-O-Fe bands are confirmed by FTIR studies. The hexagonal nature of the BHF ceramic was confirmed by TEM analysis and Rietveld refinement with space group P63/mmc. The particle size observed by TEM is 175 nm. The root means square and average roughness were found to be 61.048 nm and 44.025 nm respectively. The M-T and M-H hysteresis loop indicates temperature dependent ferromagnetic behavior of BHF ceramic. The temperature and frequency dependent dielectric properties were explained by Maxwell-Wagner theory. The value of dielectric constant (ε′) for BHF ceramic was found to be 22× 103 at 100 Hz and 483 K.

Keywords

Chemical route Rietveld refinement Dielectric properties Magnetic behavior 

Notes

Acknowledgements

Authors would like to thanks, Prof. Rajeev Prakash, In-charge of Central Instrument Facility Center (CIFC) IIT (BHU) for providing SEM, TEM and MPMS facilities.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Atendra Kumar
    • 1
  • Shiva Sundar Yadava
    • 1
  • Pooja Gautam
    • 1
  • Ankur Khare
    • 1
  • K. D. Mandal
    • 1
    Email author
  1. 1.Department of ChemistryIndian Institute of Technology (Banaras Hindu University)VaranasiIndia

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