Herein, the influence of material parameters on the core diameter of the artificial skyrmions in hard magnetic/soft magnetic bilayer thin film is investigated. It is found that the perpendicular magnetic anisotropy (PMA) constant and the interlayer exchange constant play a key role in the realization of artificial skyrmions. Through simulation, the PMA constant of the hard magnetic materials should be between 1.0 × 10⁵ and 4.5 × 10⁵ J m⁻³. Therefore, some rare earth materials with high magnetic anisotropy or other materials with low magnetic anisotropy do not meet the requirement. The initial skyrmion spin texture is Bloch-type artificial skyrmion in the hard/soft magnetic bilayer system. In the presence of 1.0–1.5 × 10⁵ J m⁻³ PMA constant and 0 J m⁻¹ interlayer exchange constant, the Néel-type artificial skyrmions are formed in the hard/soft magnetic bilayer system. The size of the hard magnetic layer material has little effect on the stability of skyrmions, so the stability of skyrmions should mainly be adjusted with the PMA of the hard magnetic materials or by changing the material types.

中文翻译：

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材料参数对硬/软磁双层中人工Skyrmion稳定性的影响

在此，研究了材料参数对硬磁/软磁双层薄膜中人工斯格明子核直径的影响。发现垂直磁各向异性（PMA）常数和层间交换常数在人工斯格明子的实现中起着关键作用。通过仿真，硬磁材料的PMA常数应该在1.0×10 ⁵和4.5×10 ⁵  J m ^{-3 之间}。因此，一些磁各向异性高的稀土材料或其他磁各向异性低的材料不符合要求。最初的斯格明子自旋纹理是硬/软磁双层系统中的布洛赫型人工斯格明子。存在 1.0–1.5 × 10 ⁵  J m^-3 PMA 常数和0 J m ^-1层间交换常数，Néel 型人造斯格明子在硬/软磁双层系统中形成。硬磁层材料的尺寸对斯格明子的稳定性影响不大，因此斯格明子的稳定性主要通过硬磁材料的PMA或改变材料类型来调整。