Anisotropy in the magnetization and magnetoelectric response of single crystalline Mn${}_4$Ta${}_2$O${}_9$

Abstract

We report temperature dependent magnetization and neutron diffraction measurements on the corundum related magnetoelectric antiferromagnet Mn${}_4$Ta${}_2$O${}_9$. Measurements performed on a single crystalline specimen reveal that the magnetization is anisotropic, and a weak ferromagnetic component emerges well within the antiferromagnetically ordered state. Powder neutron diffraction measurements indicate that the magnetic structure comprises of antiferromagnetically coupled ferromagnetic chains of Mn${}^{2+}$ spins aligned along the trigonal $c$ axis, in contrast to that reported in other isostructural members of this family. Magnetic measurements performed under a periodic electric field indicate that the magnetoelectric response is also anisotropic, with this coupling along the trigonal $c$ axis and that perpendicular to it having different signs.

References in corpus (6)

• Multiferroicity, The coupling between magnetic and polarization
• Magneto-electric effect in NdCrTiO5
• Manipulating magnetoelectric effect -- Essence learned from Co${}_4$Nb${}_2$O${}_9$
• Spin Dynamics and Magnetoelectric Coupling Mechanism of Co4Nb2O9
• Experimental and first-principles studies of magnetism and magnetoelectric effect in Co4Nb2O9 and Co4Ta2O9
• Coupled magnetic and ferroelectric states in the distorted honeycomb system Fe${}_4$Ta${}_2$O${}_9$

Cited by in corpus (3)

• Microscopic mechanism for intrinsic nonlinear anomalous Hall conductivity in noncollinear antiferromagnetic metals
• High-resolution neutron diffraction determination of noncollinear antiferromagnetic order in the honeycomb magnetoelectric Fe${}_4$Nb${}_2$O${}_9$
• Modulated non-collinear magnetic structure of (Co${}_{0.97}$${}^{57}$Fe${}_{0.03}$)${}_4$Nb${}_2$O${}_9$ as revealed by Mössbauer spectroscopy