The effect of Fe2+ ions on dielectric and magnetic properties of Yb3Fe5O12 ceramics

Abstract

Yb3Fe5O12 ceramics with garnet structure were prepared employing the solid-state reaction method. The results reveal that the emergence of Fe2+ ions greatly affects dielectric relaxation, magnetic relaxation, saturation magnetization, and magnetoelectric coupling, which was further confirmed by oxygen treatment. More interestingly, the magnetoelectric coefficient (α) reaches 28 ps m−1 at room temperature, which is among the largest values for present single-phase magnetoelectric materials.