A Neutron diffraction study of multiferroics RMn2O5

Abstract

The magnetic properties of RMn2O5 multiferrroics as obtained by unpolarized and polarized neutron diffraction experiments are reviewed. We discuss the qualitative features of the magnetic phase diagram both in zero magnetic field and in field and analyze the commensurate magnetic structure and its coupling to an applied electric field. The origin of ferrolectricity is discussed based on calculations of the ferroelectric polarization predicted by different microscopic coupling mechanisms (exchange striction and cycloidal spin-orbit models). A minimal model containing a small set of parameters is also presented in order to understand the propagation of the magnetic structure along the c-direction.

IOP Review

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Cited by in corpus (19)

• Slaving of the magnetic moment canting to the correlated oxygen rotation in Sr2IrO4 revealed by X-ray resonant scattering
• Experimental observation of ferrielectricity in multiferroic DyMn2O5: revisiting the electric polarization
• The incommensurate magnetic structure of YMn2O5: a stringent test of the multiferroic mechanism
• Induced ferroelectric phases in TbMn_2O_5
• Electric polarization induced by phase separation in magnetically ordered and paramagnetic states of RMn2O5 (R=Gd, Bi)
• Dimer Physics in the Frustrated Cairo Pentagonal Antiferromagnet Bi2Fe4O9
• Independent ferroelectric contributions and rare-earth-induced polarization reversal in multiferroic TbMn2O5
• Reversing ferroelectric polarization in multiferroic DyMn2O5 by nonmagnetic Al substitution of Mn
• The Magnetic Structure of DyMn2O5 Determined by Resonant X-ray Scattering
• Molecular-spin dynamics study of electromagnons in multiferroic RMn${}_2$O${}_5$
• Magnetically induced electric polarization reversal in multiferroic TbMn${}_2$O${}_5$: Terbium spin reorientation studied by resonant x-ray diffraction
• Topological solitons and bulk polarization switch in collinear type II multiferroics
• Reduced crystal symmetry as origin of the ferroelectric polarization within the incommensurate magnetic phase of TbMn2O5
• Direct control of magnetic chirality in NdMn2O5 by external electric field
• Antiferromagnetic spin cantings as a driving force of ferroelectricity in multiferroic Cu2OSeO3
• Frustration of Exchange-Striction Ferroelectric Ordering and Growth of Electric Polarization of Phase Separation Domains in R${}_{0.8}$Ce${}_{0.2}$Mn${}_2$O${}_5$ (R = Er, Tb) Solid Solutions
• Magnetic and electric behaviors of DyMn${}_2$O${}_5$: effect of hole doping
• Coupled electricity and magnetism in solids: multiferroics and beyond
• Spin dynamics in natural multiferroic pyroxene NaFeSi${}_2$O${}_6$