论文标题
中子非弹性散射研究的稀土原氧化物hofeo $ _3 $
Neutron inelastic scattering study of rare-earth orthoferrite HoFeO$_3$
论文作者
论文摘要
通过单晶体非弹性中子散射，研究了正弗利特石Hofeo3。我们表明，FE子系统的自旋动力学不会通过自旋晶体转变而变化。在线性自旋理论的框架中分析了观察到的磁激发光谱。在这种方法中，为FE子系统获得了最近邻居和下一个最近邻居的抗磁交换相互作用。精炼了Fe子系统的Dzyaloshinskii-Moriya相互作用的参数。 Fe自旋波谱中间隙的温度依赖性表示各向异性参数的温度演化。也进行了Fe-Ho和Ho-Ho交换相互作用值的估计。
By the single crystal inelastic neutron scattering the orthoferrite HoFeO3 was studied. We show that the spin dynamics of the Fe subsystem does not change through the spin-reorientation transitions. The observed spectrum of magnetic excitations was analyzed in the frames of linear spin-wave theory. Within this approach the antiferromagnetic exchange interactions of nearest neighbors and next nearest neighbors were obtained for Fe subsystem. Parameters of Dzyaloshinskii-Moriya interactions at Fe subsystem were refined. The temperature dependence of the gap in Fe spin-wave spectrum indicates the temperature evolution of the anisotropy parameters. The estimations for the values of Fe-Ho and Ho-Ho exchange interaction were made as well.
