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The effects of lithium and yttrium substitution on the optical and structural properties of cobalt ferrites

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Abstract

Known as a hard magnetic material, cobalt ferrite belongs to one of the most attractive classes of materials owing to its diverse technical applicability such as in catalysis, sensors, batteries. In this study, we synthesized Li- and Y-substituted cobalt ferrite nanoparticles using a sol–gel combustion method. Their mean crystallite sizes with spinel structures were calculated as 15–19 and 2–5 nm and their lattice constant values were 7.8 ± 0.02 and 8.5 ± 0.3 Å, respectively. The results also revealed that the band gap energy values of the prepared Li- and Y-doped cobalt ferrites decreased after doping compared with that of pure cobalt ferrite, and thus they appear to be promising for energy generation and storage applications.

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Acknowledgements

This study was supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2010-0028287; 2017R1A2B4012871).

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Authors and Affiliations

  1. Department of Physics, School of Advanced Science, VIT University, Vellore, Tamil Nadu, 632014, India

    M. K. Shobana

  2. School of Materials Science and Engineering, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707, Republic of Korea

    Ho-Seok Nam & Heeman Choe

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  1. M. K. Shobana
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  2. Ho-Seok Nam
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  3. Heeman Choe
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Correspondence to M. K. Shobana.

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Shobana, M.K., Nam, HS. & Choe, H. The effects of lithium and yttrium substitution on the optical and structural properties of cobalt ferrites. Indian J Phys 93, 307–313 (2019). https://doi.org/10.1007/s12648-018-1292-3

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  • DOI: https://doi.org/10.1007/s12648-018-1292-3

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