Magnetoelectric coupling tuned by competing anisotropies in Mn1-xNixTiO3

Article

关键词: PHASE-DIAGRAM;    SPIN-GLASS;    NEUTRON DIFFRACTION;    MAGNETIC-STRUCTURE;    SYSTEM;    MULTIFERROICS;    TRANSITION;    PROPERTY;    MIXTURE;    ORIGIN;   

DOI  :  10.1103/PhysRevB.90.144429

来源: SCIE

【 摘 要 】

A flop of electric polarization from P parallel to c (P-c) to P parallel to a (P-a) is observed in MnTiO3 as a spin-flop transition is triggered by a c-axis magnetic field, H-parallel to c = 7 T. The critical magnetic field H-parallel to c for P-a is significantly reduced in Mn1-xNixTiO3 (x = 0.33). P-a and P-c have been observed with both H-parallel to c and H-parallel to a. Neutron diffraction measurements revealed similar magnetic arrangements for the two compositions where the ordered spins couple antiferromagnetically with their nearest intra- and interplanar neighbors. In the x = 0.33 system, the uniaxial and planar anisotropies of Mn2+ and Ni2+ compete and give rise to a spin reorientation transition at T-R. A magnetic field, H-parallel to c, aligns the spins along c for T-R -->

【 授权许可】

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