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Magnesium- and copper-substituted strontium–aluminium–hexaferrite (SrAl2Fe10O19): synthesis and scrutiny

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Abstract

The strontium–aluminium–hexaferrite was substituted with the divalent ions (Mg/Cu) with the chemical formula of Sr1–xMxAl2Fe10O19 (M = Mg, Cu; x = 0.1, 0.2), and all the samples were synthesized via sol–gel auto combustion method. The thermal studies disclosed endothermic and exothermic peaks and showed magnetic phase transition behaviour in the range of 350–450 °C. The particles are shaped in a hexagonal structure with space group P63/mmc and the crystallize size ranges between 44 and 53 nm. The field-emission scanning microscopy revealed the platelet-like morphology of the particles. The magnetic studies disclosed the fine range of magnetic saturation (40.87–49.76 emu/g) and coercivity values (4619–7647 Oe). The particles own single-domain arrangement and decent energy product value (0.32–0.38 MGOe), implying their potential application in permanent magnets. The lower dielectric constant values at high-frequency range suggest their potential employment in microwave applications.

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Acknowledgements

The authors would like to acknowledge VIT management for the facilities provided for this work. The authors also would like to convey their gratefulness to all the lab members.

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Authors and Affiliations

  1. School of Advanced Sciences, Vellore Institute of Technology, No. 409, Technology Tower, Vellore, Tamil Nadu, 632014, India

    Himani Joshi & A. Ruban Kumar

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  1. Himani Joshi
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  2. A. Ruban Kumar
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Conceptualization, methodology, formal analysis and investigation, writing—original draft preparation: HJ; writing—review and editing, supervision: ARK.

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Correspondence to A. Ruban Kumar.

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Joshi, H., Ruban Kumar, A. Magnesium- and copper-substituted strontium–aluminium–hexaferrite (SrAl2Fe10O19): synthesis and scrutiny. Appl. Phys. A 130, 24 (2024). https://doi.org/10.1007/s00339-023-07170-3

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