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Optical and electronic properties of copper and cobalt substituted nano SrBaFe12O19 synthesized by sol–gel autocombustion method

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Abstract

The current study addresses the synthesis and characterization of Sr0.5Ba0.5Fe12−2xCoxCuxO19 (x = 0.0–0.8) (SBFCCO) nanoparticles prepared via sol–gel autocombustion route. The diffraction pattern revealed the formation of the single phase hexagonal structure. The average crystallite size was noted to be altering from 8 to 12 nm. The TEM pictures also reveal the agglomerated facets like nanoparticles of particle size changing from > 200 to 40 nm for various ‘x’ values. The dielectric parameters were calculated and elucidated as a function of frequency and temperature. In addition, the UV–visible spectra expressed the significant decrease in bandgap energy from 3.54 to 2.80 eV with increase of doping content. Therefore, these samples may reveal wide applications in optoelectronic devices, photo catalytic and sensor based applications because of the wide band gaps.

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Acknowledgements

The authors (D.R and J.L.N.) are very grateful to Prof. G. Prasad, Head, Department of Physics, Osmania University, Hyderabad for his encouragement.

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Authors and Affiliations

  1. Department of Applied Physics, Aligarh Muslim University, Aligarh, 202002, India

    Mohammad Tasleem, Mohd. Hashim & Syed Asad Ali

  2. Department of Physics, GITAM Deemed to be University, Bangalore, Karnataka, 562163, India

    K. Chandra Babu Naidu

  3. Department of Physics, Osmania University, Hyderabad, Telangana, 500007, India

    D. Ravinder

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Tasleem, M., Hashim, M., Naidu, K.C.B. et al. Optical and electronic properties of copper and cobalt substituted nano SrBaFe12O19 synthesized by sol–gel autocombustion method. Appl. Phys. A 125, 305 (2019). https://doi.org/10.1007/s00339-019-2618-5

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