Abstract 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.

中文翻译：

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稀土正铁氧体HoFeO3的中子非弹性散射研究

摘要 通过单晶非弹性中子散射研究了正铁氧体HoFeO3。我们表明 Fe 子系统的自旋动力学不会通过自旋重定向转变而改变。在线性自旋波理论的框架中分析了观察到的磁激发光谱。在这种方法中，获得了 Fe 子系统的最近邻和下一个最近邻的反铁磁交换相互作用。改进了 Fe 子系统中 Dzyaloshinskii-Moriya 相互作用的参数。Fe自旋波谱中间隙的温度依赖性表明各向异性参数的温度演变。还对 Fe-Ho 和 Ho-Ho 交换相互作用的值进行了估计。