Magnetic and dielectric properties in the langasite-type compounds : A3BFe3D2O14 with A=Ba, Sr, Ca, B=Ta, Nb, Sb and D=Ge, Si

Abstract

The Fe-based langasites are the first reported compounds presenting a magnetic ordering in this rich family, besides being well known for piezo-electric properties and optical activity. The structural, magnetic and dielectric properties of the Fe langasite compounds, with various substitution of non-magnetic cations, have been studied with x-ray and neutron diffraction, magnetostatic measurements, Mössbauer spectroscopy, and dielectric measurements. The title compounds (trigonal, space group P321) display a helical magnetic order with signatures of frustration below TN ~24- 35 K where an anomaly of the dielectric permittivity is observed. The influence of the cationic substitutions and the nature of the magnetoelectric coupling is hereafter addressed.

References in corpus (3)

• Room temperature coexistence of large electric polarization and magnetic order in BiFeO3 single crystals
• Direct transition from a disordered to a multiferroic phase on a triangular lattice
• Single domain magnetic helicity and triangular chirality in structurally enantiopure Ba3NbFe3Si2O14

Cited by in corpus (19)

• Linear spin wave theory for single-Q incommensurate magnetic structures
• Parity Broken Chiral Spin Dynamics in Ba${}_3$NbFe${}_3$Si${}_2$O${}_{14}$
• Magnetic chirality as probed by neutron scattering
• Helical spin-waves, magnetic order, and fluctuations in the langasite compound Ba3NbFe3Si2O14
• Role of Antisymmetric Exchange in Selecting Magnetic Chirality in Ba${}_3$NbFe${}_3$Si${}_2$O${}_{14}$
• THz Magneto-electric atomic rotations in the chiral compound Ba${}_3$NbFe${}_3$Si${}_2$O${}_{14}$
• Dzyaloshinsky-Moriya driven helical-butterfly structure in Ba3NbFe3Si2O14
• Unusual magnetoelectric effect in paramagnetic rare-earth langasite
• Magnetic Control of Ferroelectric Polarization in a Self-formed Single Magnetoelectric Domain of Multiferroic Ba3NbFe3Si2O14
• Effect of divalent Ba cation substitution with Sr on coupled multiglass state in the magnetoelectric multiferroic compound Ba3NbFe3Si2O14
• Helical bunching and symmetry lowering inducing multiferroicity in Fe langasites
• Chiral spin-wave excitations of the spin-5/2 trimers in the langasite compound Ba3NbFe3Si2O14
• Crystal Symmetry Lowering in Chiral Multiferroic Ba${}_3$TaFe${}_3$Si${}_2$O${}_{14}$ observed by X-Ray Magnetic Scattering
• Crystal Structure and Magnetic Properties of the Ba3TeCo3P2O14, Pb3TeCo3P2O14, and Pb3TeCo3V2O14 Langasites
• Spin-wave directional anisotropies in antiferromagnetic Ba${}_3$NbFe${}_3$Si${}_2$O${}_{14}$
• Covalency driven modulation of paramagnetism and development of lone pair ferroelectricity in multiferroic Pb${}_3$TeMn${}_3$P${}_2$O${}_{14}$
• Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb${}_2$O${}_6$
• The effect of local distortions on magnetic and magnetoelectric properties of paramagnetic Pr3Ga5SiO14 langasite
• Resolving the local distortions of Ising-like moments in magnetoelectric Ho-doped langasite