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- W4317494042 abstract "Herein, using first-principles density functional theory (DFT) calculations, we have investigated the effects of Bi substitution on the structural, electronic, and magnetic properties of barium hexaferrite (BaFe12-xBixO19, x = 0; 0.5; 1.5 and 2). As a result of the calculation, it was determined that the most stable structure exists if the spin of the Fe atom on the 2a, 2b, and 12k positions of the barium hexaferrite compound is taken in the upward direction. The calculated lattice constant ca=3.9 and magnetic moment (4.24μB) of iron ions are in reasonable agreement with other experimental works. Moreover, the presence of bismuth reduces the electronic band gap. Energy gain and magnetic anisotropy energy calculations for FIM, FM, and NM states were performed for the most stable states. It has been established that the most stable structural state is characteristic of х = 0.5. It has been calculated that substitution by the large Bi3+ ion dramatically changed the electronic structure and sharply reduced the band gap. This paper is the first step towards establishing the nature of the distribution of ions in M-type hexaferrites under conditions of substitution by ions with a large ionic radius." @default.
- W4317494042 created "2023-01-20" @default.
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- W4317494042 date "2023-05-01" @default.
- W4317494042 modified "2023-10-15" @default.
- W4317494042 title "Correlation of the crystal features, magnetic parameters, and electronic structure of Bi-substituted BaFe12-xBixO19 hexaferrites: Theoretical background" @default.
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- W4317494042 doi "https://doi.org/10.1016/j.ceramint.2023.01.134" @default.
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