Antiferromagnetism of Double Molybdate LiFe(MoO4)2.
Meifeng LiuYang ZhangTao ZouV Ovidiu GarleaTimothy CharltonYu WangFei LiuYunlong XieXiang LiLun YangBiwen LiXiuzhang WangShuai DongJun-Ming LiuPublished in: Inorganic chemistry (2020)
The magnetic properties of the spin-5/2 double molybdate LiFe(MoO4)2 have been characterized by heat capacity, magnetic susceptibility, and neutron powder diffraction techniques. Unlike the multiferroic system LiFe(WO4)2 which exhibits two successive magnetic transitions, LiFe(MoO4)2 undergoes only one antiferromagnetic transition at TN ∼ 23.8 K. Its antiferromagnetic magnetic structure with the commensurate propagation vector k = (0, 0.5, 0) has been determined. Density functional theory calculations confirm the antiferromagnetic ground state and provide a numerical estimate of the relevant exchange coupling constants.