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- W1978282611 abstract "We present a theoretical study of the structure-property correlation in gallium ferrite, based on first-principles calculations followed by a subsequent comparison with experiments. The local spin density approximation (LSDA + U) of the density functional theory has been used to calculate the ground state structure, electronic band structure, density of states and Born effective charges. The calculations reveal that the ground state structure is orthorhombic Pc 2(1)n having A-type antiferromagnetic spin configuration, with lattice parameters matching well with those obtained experimentally. Plots of the partial density of states of constituent ions exhibit noticeable hybridization of Fe 3d, Ga 4s, Ga 4p and O 2p states. However, the calculated charge density and electron localization function show a largely ionic character of the Ga/Fe-O bonds which is also supported by a lack of any significant anomaly in the calculated Born effective charges with respect to the corresponding nominal ionic charges. The calculations show a spontaneous polarization of ∼ 59 µC cm( - 2) along the b-axis which is largely due to asymmetrically placed Ga1, Fe1, O1, O2 and O6 ions." @default.
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- W1978282611 date "2011-07-25" @default.
- W1978282611 modified "2023-09-25" @default.
- W1978282611 title "Electronic structure, Born effective charges and spontaneous polarization in magnetoelectric gallium ferrite" @default.
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- W1978282611 doi "https://doi.org/10.1088/0953-8984/23/32/325902" @default.
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