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Pure polycrystalline barium hexaferrite film prepared without buffer layer, using a sol–gel method

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Abstract

Pure polycrystalline BaFe12O19 films have been successfully prepared using a sol–gel method without a buffer layer. The films were annealed at a temperature range of 700 °C to 900 °C in air and oxygen for 2 h. An X-ray diffraction analysis showed that films annealed in air at 800 °C and 900 °C crystallized into a single phase. However, the film annealed in oxygen at 900 °C showed the appearance of a non-magnetic phase. The magnetic properties analysis showed films annealed in air surroundings at 800 °C and 900 °C have large coercivity values (5270 Oe, 5086 Oe) and high saturation magnetization values (160 emu/cm3, 194 emu/cm3), respectively. However, films that were annealed at 800 °C and 900 °C in oxygen surroundings showed high coercivity (940 Oe and 5425 Oe) but low saturation magnetization values (80 emu/cm3 and 64 emu/cm3, respectively).

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Acknowledgements

The authors would like to thank to the Ministry of Higher Education Malaysia for the financial support with grant no. [FRGS/1/2019/STG02/UKM/02/2] and Universiti Kebangsaan Malaysia for grant no. [GP-2020-K006916].

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  1. Department of Applied Physics, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia

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Noratiqah, Y., Ibrahim, N.B. Pure polycrystalline barium hexaferrite film prepared without buffer layer, using a sol–gel method. Appl. Phys. A 129, 1 (2023). https://doi.org/10.1007/s00339-022-06289-z

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  • DOI: https://doi.org/10.1007/s00339-022-06289-z

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