Abstract Epitaxial Fe 4− x Mn x N ( x = 0, 1, 2, 3, and 4) thin films were successfully grown on MgO(0 0 1) single-crystal substrates by molecular beam epitaxy, and their crystalline qualities and magnetic properties were investigated. It was found that the lattice constants of Fe 4− x Mn x N obtained from X-ray diffraction measurement increased with the Mn content. The ratio of the perpendicular lattice constant c to the in-plane lattice constant a of Fe 4− x Mn x N was found to be about 0.99 at x ⩾ 2. The magnetic properties evaluated using a vibrating sample magnetometer at room temperature revealed that all of the Fe 4− x Mn x N films exhibited ferromagnetic behavior regardless of the value of x . In addition, the saturation magnetization decreased non-linearly as the Mn content increased. Finally, FeMn 3 N and Mn 4 N exhibited perpendicular anisotropy and their uniaxial magnetic anisotropy energies were 2.2 × 10 5 and 7.5 × 10 5 erg/cm 3 , respectively.

中文翻译：

---

通过分子束外延在 MgO(001) 衬底上生长的 Fe 4− x Mn x N 薄膜的外延生长和磁性

摘要 外延 Fe 4− x Mn x N ( x = 0, 1, 2, 3, 4) 薄膜通过分子束外延成功地生长在 MgO(0 0 1) 单晶衬底上，其结晶质量和磁性属性进行了调查。发现由X射线衍射测量获得的Fe 4- x Mn x N的晶格常数随着Mn含量而增加。发现垂直晶格常数 c 与 Fe 4− x Mn x N 的面内晶格常数 a 之比在 x ⩾ 2 处约为 0.99。在室温下使用振动样品磁力计评估的磁性能表明所有Fe 4- x Mn x N 薄膜的 4- x Mn x N 薄膜表现出铁磁行为，而与 x 的值无关。此外，随着Mn含量的增加，饱和磁化强度呈非线性下降。最后，