The elemental magnetic moments and the average atomic moment of 10–20 nm thick single crystal bcc (bct) FexCoyMnz films deposited on MgO(001) have been determined as a function of a broad range of compositions. Thin film epitaxy stabilized the bcc structure for 80% of the available ternary compositional space compared to only a 23% stability region for the bulk. The films that display ferromagnetism represent 60% of the available compositional possibilities compared to 25% for the bulk. A maximum average atomic moment of 3.25 ± 0.3 μB/atom was observed for a bcc Fe9Co62Mn29 film (well above the limit of the Slater-Pauling binary alloy curve of 2.45 μB/atom). The FexCoyMnz ternary alloys that exhibit high moments can only be synthesized as ultrathin films since the bcc structure is not stable in the bulk for those compositions.

中文翻译：

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bcc FexCoyMnz 三元合金薄膜中的大矩

沉积在 MgO(001) 上的 10-20 nm 厚单晶 bcc (bct) FexCoyMnz 薄膜的元素磁矩和平均原子矩已被确定为广泛组成范围的函数。薄膜外延稳定了 80% 的可用三元组成空间的 bcc 结构，而体块的稳定区域仅为 23%。显示铁磁性的薄膜代表了 60% 的可用成分可能性，而块状薄膜则占 25%。观察到 bcc Fe9Co62Mn29 薄膜的最大平均原子矩为 3.25 ± 0.3 μB/原子（远高于 2.45 μB/原子的 Slater-Pauling 二元合金曲线的极限）。表现出高矩的 FexCoyMnz 三元合金只能合成为超薄膜，因为这些成分的体心立方结构在本体中不稳定。