Abstract
Transition metal ion substitution in sodium phosphate is effective in enhancing the performance of a cathode material. The maricite-NaFe1−xMnxPO4 (x = 0.1, 0.2, 0.3, 0.4, and 0.5) were synthesized using solid-state procedures. The lattice constants and bond lengths between Fe–O ions of NaFe1−xMnxPO4 increased by increasing the Mn substitutions. The temperature dependence of the magnetization for NaFe1−xMnxPO4 decreased with an increase in the Mn substitutions, indicating a weakened antiferromagnetic interaction. The Mössbauer spectra exhibited asymmetrical line below the Néel temperature (TN) and were fitted with eight Lorentzian lines, owing to a strong crystalline field in the distorted Fe(Mn)O6 octahedral site.
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This work was supported by Mid-Career Researcher Program, through the National Research Foundation of Korea (NRF), with a grant funded by the Ministry of Education, Science and Technology (MEST) (NRF-2017R1A2B2012241).
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Seo, J.Y., Choi, H. & Kim, C.S. Mn doping on Mössbauer spectroscopy of maricite-NaFePO4 as cathode material. J Radioanal Nucl Chem 330, 427–432 (2021). https://doi.org/10.1007/s10967-021-07676-1
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DOI: https://doi.org/10.1007/s10967-021-07676-1