Multiferroic Properties of CaMn${}_7$O${}_{12}$

Abstract

We report that CaMn${}_7$O${}_{12}$ is a new magnetic multiferroic material. The appearance of a ferroelectric polarization coinciding with the magnetic phase transition ($\sim 90$ K) suggests the presence of ferroelectricity induced by magnetism, further confirmed by its strong magnetoelectric response. With respect to other known magnetic multiferroics, CaMn${}_7$O${}_{12}$ displays attractive multiferroic properties, such as a high ferroelectric critical temperature and large polarization. More importantly, these results open a new avenue to search for magnetic multiferroics in the catalogue of doped oxides.

5 pages, 4 figures. To be published in PRB

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• Recent Progress of Multiferroic Perovskite Manganites
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• BaFe${}_2$Se${}_3$: a high $T_{\mathrm{C}}$ magnetic multiferroic with large ferrielectric polarization
• CaBaCo${}_4$O${}_7$ : A ferrimagnetic pyroelectric
• Multicaloric effect in multiferroic Y2CoMnO6
• Experimental observation of ferrielectricity in multiferroic DyMn2O5: revisiting the electric polarization
• Topological magnetic phase in LaMnO${}_3$ (111) bilayer
• THz Magneto-electric atomic rotations in the chiral compound Ba${}_3$NbFe${}_3$Si${}_2$O${}_{14}$
• Universal magneto-orbital ordering in the divalent $A$-site quadruple perovskite manganites $A$Mn${}_7$O${}_{12}$ ($A$ = Ca, Sr, Cd, and Pb)
• Magnetic and electric properties of CaMn7O12 based multiferroic compounds: effect of electron doping
• Cycloidal magnetism driven ferroelectricity in double tungstate LiFe(WO${}_4$)${}_2$
• Improper Ferroelectric Polarisation in a Perovskite driven by Inter-site Charge Transfer and Ordering
• Internal-strain mediated coupling between polar Bi and magnetic Mn ions in the defect-free quadruple-perovskite BiMn${}_3$Mn${}_4$O${}_{12}$
• Commensurate structural modulation in the charge- and orbitally-ordered phase of the quadruple perovskite (NaMn${}_3$)Mn${}_4$O${}_{12}$
• Possible coupling between magnons and phonons in multiferroic CaMn7O12
• Impact of the various spin and orbital ordering processes on multiferroic properties of orthovanadate DyVO3
• Ground-state structure, orbital ordering and metal-insulator transition in double-perovskite PrBaMn2O6
• Experimental observation of magnetoelectricity in spin ice Dy${}_2$Ti${}_2$O${}_7$
• Soft vibrational mode associated with incommensurate orbital order in multiferroic CaMn${}_7$O${}_{12}$
• First-principles study of structurally modulated multiferroic CaMn${}_7$O${}_{12}$
• Improper magnetic ferroelectricity of nearly pure electronic nature in cycloidal spiral CaMn${}_7$O${}_{12}$
• Ferroelectricity in the 1 $\mu$C cm${}^{-2}$ range induced by canted antiferromagnetism in (LaMn${}_3$)Mn${}_4$O${}_{12}$
• Soft phonon driven orbital order in CaMn7O12
• Reversing ferroelectric polarization in multiferroic DyMn2O5 by nonmagnetic Al substitution of Mn
• New iron-based multiferroics with improper ferroelectricity
• Magnetic transitions in CaMn7O12 : a Raman observation of spin-phonon couplings
• Magnetic and orbital correlations in multiferroic CaMn${}_7$O${}_{12}$ probed by x-ray resonant elastic scattering
• Unconventional magnetic ferroelectricity in the quadruple perovskite NaMn${}_7$O${}_{12}$
• Direct evidence for intermediate multiferroic phase in LiCuFe2(VO4)3
• Enhancing the magnetoelectric coupling of Co4Nb2O9[100] by substitution of Mg for Co