We report on the experimental realization of tetragonal Fe-Co alloys as a constituent of Fe(0.36)Co(0.64)/Pt superlattices with huge perpendicular magnetocrystalline anisotropy energy, reaching 210 mu eV/atom, and a saturation magnetization of 2.5 mu(B)/atom at 40 K, in qualitative agreement with theoretical predictions. At room temperature the corresponding values 150 mu eV/atom and 2.2 mu(B)/atom are achieved. This suggests that Fe-Co alloys with carefully chosen combinations of composition and distortion are good candidates for high-density perpendicular storage materials.
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机译：我们报道了四方Fe-Co合金作为Fe（0.36）Co（0.64）/ Pt超晶格的组成部分的实验实现，该超晶格具有巨大的垂直磁晶各向异性能，达到210 mu eV /原子，饱和磁化强度为2.5 mu（B） ）/原子（40 K），与理论预测在质量上吻合。在室温下，获得了150 mu eV /原子和2.2 mu（B）/原子的对应值。这表明具有精心选择的成分和变形组合的Fe-Co合金是高密度垂直存储材料的良好候选者。
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