论文标题
通过自旋晶格动力学中的温度依赖性磁力
Temperature-dependent magnetism in Fe foams via spin-lattice dynamics
论文作者
论文摘要
自旋晶格动力学用于研究Fe泡沫的磁性。泡沫中磁化的温度依赖性取决于Nsurf泡沫中表面原子比例的函数。泡沫的Curie温度与Nsurf近似线性降低，而磁化强度的临界指数则更大。如果将数据绘制为表面原子比例的函数，则可以观察到有关临界的空缺晶体的最新数据以及有关空隙填充晶体的新数据的合理一致。临界温度和临界指数也取决于表面原子的配位。尽管我们发现的减少相对较小，但它暗示了提高拓扑用法对泰勒磁性特性的可能性。
Spin-lattice dynamics is used to study the magnetic properties of Fe foams. The temperature dependence of the magnetization in foams is determined as a function of the fraction of surface atoms in foams, nsurf. The Curie temperature of foams decreases approximately linearly with nsurf, while the critical exponent of the magnetization increases considerably more strongly. If the data are plotted as a function of the fraction of surface atoms, reasonable agreement with recent data on vacancy-filled Fe crystals and novel data on void-filled crystals is observed for the critical . Critical temperature and critical exponent also depend on the coordination of surface atoms. Although the decrease we find is relatively small, it hints to the possibility of improved usage of topology to taylor magnetic properties.
