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In this study, we investigate the magnetoelectric (ME) effect of the newlydiscovered antiferromagnetic (AFM) compound Ce$_{3}$TiBi$_{5}$ with a hexagonalstructure (space group $P6_{3}$/$mcm$). In this system, Ce ions form zig-zagchains that extend along the $c$-axis. We focus on the lack of the localinversion symmetry at the Ce site, although the crystal structure has aninversion center. A theoretical study has predicted that magnetization can beinduced by an electric current in the AFM ordering on the zig-zag chain. Weconducted magnetization measurements on Ce$_{3}$TiBi$_{5}$ under an appliedconstant electric current and a static magnetic field around the AFM orderingtemperature of $T_{\rm N}$ = 5.0 K. We successfully observed of thecurrent-induced magnetization below $T_{\rm N}$. The magnitude of thecurrent-induced magnetization has a linear electric current dependence andexhibits no magnetic field dependence. This behavior is consistent with thetheoretical prediction of the ME effect in the ferrotoroidal ordered state.

Magnetoelectric Effect in the Antiferromagnetic Ordered State of Ce$_{3}$TiBi$_{5}$ with Ce Zig-Zag Chains