Antiferromagnetism of Double Molybdate LiFe(MoO${}_4$)${}_2$

Abstract

The magnetic properties of the spin-5/2 double molybdate LiFe(MoO${}_4$)${}_2$ have been characterized by heat capacity, magnetic susceptibility, and neutron powder diffraction techniques. Unlike the multiferroic system LiFe(MoO${}_4$)${}_2$ which exhibits two successive magnetic transitions, LiFe(MoO${}_4$)${}_2$ undergoes only one antiferromagnetic transition at $T_N$ ~ 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.

arXiv comment24 pages, 8 figures

References in corpus (9)

• Restoring the density-gradient expansion for exchange in solids and surfaces
• Generalized gradient approximation for solids and their surfaces
• First-principles study of spontaneous polarization in multiferroic BiFeO${}_3$
• Ferroelectric polarization flop in a frustrated magnet MnWO${}_4$ induced by magnetic fields
• Direct transition from a disordered to a multiferroic phase on a triangular lattice
• Quasi two-dimensional antiferromagnet on a triangular lattice RbFe(MoO4)2
• Magnetic transitions in the spin S=5/2 frustrated magnet BiMn2PO6 and strong lattice softening in BiMn2PO6 and BiZn2PO6 below 200 K
• Cycloidal magnetism driven ferroelectricity in double tungstate LiFe(WO${}_4$)${}_2$
• Strong magnetoelastic coupling at the transition from harmonic to anharmonic order in NaFe(WO${}_4$)${}_2$ with 3d${}^5$ configuration

Cited by in corpus (1)

• Incommensurate-commensurate magnetic phase transition in the double tungstate Li2Co(WO4)2