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Coulomb Correlations and Magnetic Anisotropy in ordered $L1_0$ CoPt and FePt alloys

Alexander B. Shick·Oleg N. Mryasov
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Abstract

We present results of the magneto-crystalline anisotropy energy (MAE) calculations for chemically ordered $L1_0$ CoPt and FePt alloys taking into account the effects of strong electronic correlations and spin-orbit coupling. The local spin density + Hubbard U approximation (LSDA+U) is shown to provide a consistent picture of the magnetic ground state properties when intra-atomic Coulomb correlations are included for both 3$d$ and 5$d$ elements. Our results demonstrate significant and complex contribution of correlation effects to large MAE of these material.

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Alexander B. Shick, Oleg N. Mryasov. 2003-01-07. Coulomb Correlations and Magnetic Anisotropy in ordered $L1_0$ CoPt and FePt alloys. https://doi.org/10.1103/physrevb.67.172407

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