Prediction of Room Temperature Electric Field Reversal of Magnetization in the Family of $A_4{B}_3{\mathrm{O}}_9$ Layered Oxides

Abstract

The promise of a strong magnetoelectric coupling in a multiferroic material is not only of fundamental interest, but also forms the basis of next generation memory devices where the direction of magnetization can be reversed by an external electric field. Using group-theory led first-principles calculations, we have identified a hitherto unknown polar phase of the $A_4{B}_3{\mathrm{O}}_9$ layered oxides, where the polar mode couples to the magnetic modes through a rare $\Gamma$-point magnetoelectric-multiferroic coupling scheme such that the net magnetization can be directly reversed by an electric field switching of the polar mode. Furthermore, in agreement with previous experimental observations, we predict room temperature magnetism in $A_4{B}_3{\mathrm{O}}_9$ oxides which indicates the promising practical applications of these compounds in the next generation memory devices.

References in corpus (13)

• Restoring the density-gradient expansion for exchange in solids and surfaces
• Generalized gradient approximation for solids and their surfaces
• Weak ferromagnetism and magnetoelectric coupling in bismuth ferrite
• Electrical control of magnetism by electric field and current-induced torques
• Electric-field switchable magnetization via the Dzyaloshinskii-Moriya interaction: FeTiO_3 versus BiFeO_3
• Electrical control of large magnetization reversal in a helimagnet
• Magnetization-polarization cross-control near room temperature in hexaferrite single crystals
• Electronically driven spin-reorientation transition of the correlated polar metal Ca${}_3$Ru${}_2$O${}_7$
• Room Temperature Ferroelectric Ferromagnet in 1D Tetrahedral Chain Network
• Magnetic spectrum of the two-dimensional antiferromagnet La2CoO4 studied by inelastic neutron scattering
• Synthesis and Characterization of Sodium Iron Antimonate Na2FeSbO5 One-Dimensional Antiferromagnetic Chain Compound with a Spin Glass Ground State
• Strain control of a bandwidth-driven spin reorientation in Ca${}_3$Ru${}_2$O${}_7$
• First-principles investigation of the magnetoelectric properties of Ba${}_7$Mn${}_4$O${}_{15}$