Magnetoelectric Effect In The Antiferromagnetic Ordered State Of Ce3tibi5 With Ce Zig-Zag Chains

In this study, we investigate the magnetoelectric (ME) effect of the newly discovered antiferromagnetic (AFM) compound Ce3TiBi5 with a hexagonal structure (space group P6(3)/mcm). In this system, Ce ions form zig-zag chains that extend along the c -axis. We focus on the lack of the local inversion symmetry at the Ce site, although the crystal structure has an inversion center. A theoretical study has predicted that magnetizationcan be induced by an electric current in the AFM ordering on the zig-zag chain. We conducted magnetization measurements on Ce3TiBi5 under an applied constant electric current and a static magnetic field around the AFM ordering temperature of T-N = 5.0 K. We successfully observed of the current-induced magnetization below T-N. The magnitude of the current-induced magnetization has a linear electric current dependence and exhibits no magnetic field dependence. This behavior is consistent with the theoretical prediction of the ME effect in the ferrotoroidal ordered state.