采用固相法制备了稀土正铁氧体HoFe_(1-x)Cr_xO_3(x=0,0.2,…,1.0)系列固溶体,并利用磁性测量和中子衍射研究了其随着温度变化的磁性相变和自旋重取向行为。中子衍射实验在中国原子能科学研究院CARR中子散射平台和中国绵阳研究堆(CMRR)的中子散射平台上完成。通过Rietveld方法可获得不同温度下的晶体结构和磁结构。中子衍射实验发现,当x<0.6时在奈尔温度T_N以下,Fe(Cr)~(3+)离子的磁有序呈F_4(G_xA_yF_z)相。磁 A series of solid solutions of rare earth ferrite, HoFe_ (1-x) Cr_xO_3 (x = 0,0.2, ..., 1.0) were prepared by solid state reaction method and their magnetic properties were investigated with magnetic measurements and neutron diffraction Variable and spin reorientation behavior. Neutron diffraction experiments were performed on the CARR neutron scattering platform of China Institute of Atomic Energy and the neutron scattering platform of China Mianyang Research Reactor (CMRR). By Rietveld method can be obtained under different temperature crystal structure and magnetic structure. The neutron diffraction experiment shows that the magnetic order of Fe (Cr) 3+ ions is F_4 (G_xA_yF_z) when x <0.6 and below the Nel temperature T_N. magnetic