Anisotropy in the magnetization and magnetoelectric response of single crystalline Mn4Ta2O9

Article

关键词: SUSCEPTIBILITY;    POLARIZATION;    TRANSITION;   

DOI  :  10.1103/PhysRevB.103.014422

来源: SCIE

【 摘 要 】

We report temperature dependent magnetization and neutron diffraction measurements on the corundum related magnetoelectric antiferromagnet Mn4Ta2O9. 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 Mn2+ 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.

【 授权许可】

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