Linear magnetoelectric effect is an attractive phenomenon in condensed matters and provides indispensable technological functionalities. Here a colossal linear magnetoelectric effect with diagonal component alfa_33 reaching up to ~480 ps/m is reported in a polar magnet Fe2Mo3O8, and this effect can persist in a broad range of magnetic field (~20 T) and is orders of magnitude larger than reported values in literature. Such an exceptional experimental observation can be well reproduced by a theoretical model affirmatively unveiling the vital contributions from the exchange striction, while the sign difference of magnetocrystalline anisotropy can also be reasonably figured out.
@article{arxiv.2309.08974,
title = {Colossal linear magnetoelectricity in polar magnet Fe2Mo3O8},
author = {Yuting Chang and Yakui Weng and Yunlong Xie and Bin You and Junfeng Wang and Liang Li and Jun-Ming Liu and Shuai Dong and Chengliang Lu},
journal= {arXiv preprint arXiv:2309.08974},
year = {2023}
}