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本文研究了Na_3[CrMo_6O_(24)H_6]·8H_2O单晶磁性稀释在同构的Na_3[CrMo_6O_(24)H_6]·8H2O单晶后Cr(Ⅲ)离子在室温X波段的EPR波谱。从主轴平面上的EPR数据用最小二乘法获得了g张量的主值g_(ZZ)=1.904,g_(XX)=1.973,g_(YY)=1.933和零场分裂张量参数D=0.275cm~(-1),E=0.05cm~(-1)。根据这些实验参数,计算了磁场处在主轴平面上相对主轴的不同取向的磁性基态能级,并导出了主轴平面上EPR谱随磁场取向角度变化的等频曲线。这个计算曲线与主轴平面上实验数据曲线符合很好。
In this paper, the EPR spectra of Cr (Ⅲ) ion at room temperature X-band after Na_3 [CrMo_6O_ (24) H_6] · 8H_2O single crystal magnetically diluted in isomorphous Na_3 [CrMo_6O_ (24) H_6] From the EPR data on the principal plane, the main g_ (ZZ) = 1.904, g_ (XX) = 1.973, g_ (YY) = 1.933 and zero field splitting tensor parameter D = 0.275cm ~ (-1), E = 0.05cm ~ (-1). Based on these experimental parameters, the magnetic ground states at different orientations relative to the major axis of the magnetic field are calculated and the equipotential curves of the EPR spectrum with the orientation angle of the magnetic field are deduced. This calculated curve is in good agreement with the experimental data curve on the principal plane.