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Magnetic structures and magnetocrystalline anisotropy in bulk and thin film Fe_3Pt

机译:块状和薄膜Fe_3Pt的磁结构和磁晶各向异性

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摘要

Magnetic structures and magnetocrystalline anisotropy (MCA) of tetragonal phase Fe_3Pt with an L1_2 atomic ordering in bulk and thin film are investigated by means of the first-principles full-potential linearized augmented plane-wave method. The results obtained predict that the tetragonal phase, in which the tetragonal distortion with (c/a) - 0.95 makes an asymmetry of magnetic properties along the c-axis (out-of-plane) and a-axis (in-plane), has an out-of-plane MCA. In addition, from the thin film calculations, the presence of surface is found to strongly enhance the out-of-plane MCA.
机译:采用第一性原理全能线性化增强平面波方法研究了具有L1_2原子序的四方相Fe_3Pt在块体和薄膜中的磁结构和磁晶各向异性。获得的结果预测,其中(c / a)-0.95的四方畸变沿c轴(面外)和a轴(面内)的磁特性不对称的四方相,具有平面外MCA。另外,从薄膜计算中,发现表面的存在极大地增强了平面外MCA。

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