论文标题
小角度的中子散射通过空间不均匀的铁磁体，其平均单轴各向异性非零
Small-angle neutron scattering by spatially inhomogeneous ferromagnets with a nonzero average uniaxial anisotropy
论文作者
论文摘要
微磁性小角度中子散射理论已很好地确定，用于分析散装铁磁体的自旋 - 分离散射数据。在这里，除了已经包含的随机零平均局部各向异性外，该理论延伸到材料的全局单轴磁各向异性（纹理）。宏观横截面和自旋 - 分离响应函数是通过分析计算的，用于平行和垂直散射几何形状的几种实际相关的相互各向异性和外部磁场方向，用于旋转饱和度以上和下方。其中一些表达式经过了磁性磁场玻璃体和塑料形成的Ni的已发表的实验数据，从而确定相应的全局单轴性各向异性质量因子。
Micromagnetic small-angle neutron scattering theory is well established for analyzing spin-misalignment scattering data of bulk ferromagnets. Here, this theory is extended to allow for a global uniaxial magnetic anisotropy (texture) of the material, in addition to the already included random zero-average local anisotropy. Macroscopic cross-sections and spin-misalignment response functions are computed analytically for several practically relevant mutual anisotropy and external magnetic field orientations in both parallel and perpendicular scattering geometries for field magnitudes both above and below the rotational saturation. Some of these expressions are tested on published experimental data of magnetic-field-annealed Vitroperm and plastically-deformed Ni, allowing to determine the corresponding global uniaxial anisotropy quality factors.
