论文标题
从球形纳米粒子中进行中子散射的微磁模拟：孔型缺陷的影响
Micromagnetic simulation of neutron scattering from spherical nanoparticles: Effect of pore-type defects
论文作者
论文摘要
我们采用微磁模拟来对孔型微结构缺陷对磁性小角度中子散射横截面和球形磁性纳米颗粒的相关配对分布函数的影响进行建模。我们的磁能表达考虑了各向同性交换相互作用，磁晶的各向异性，偶极相互作用和外部施加的磁场。突出显示了缺陷的特征和偶极能的作用，并研究了粒度分布的效果。结果是实验者的指导。
We employ micromagnetic simulations to model the effect of pore-type microstructural defects on the magnetic small-angle neutron scattering cross section and the related pair-distance distribution function of spherical magnetic nanoparticles. Our expression for the magnetic energy takes into account the isotropic exchange interaction, the magnetocrystalline anisotropy, the dipolar interaction, and an externally applied magnetic field. The signatures of the defects and the role of the dipolar energy are highlighted and the effect of a particle-size distribution is studied. The results serve as a guideline to the experimentalist.
