Wilhelm Röntgen
The first example of a magnetoelectric effect was discussed in 1888 by Wilhelm Röntgen, who showed that a dielectric material moving through an electric field would become magnetized. The possibility of an intrinsic magnetoelectric effect in a (non-moving) material was conjectured by P. Curie in 1894, while the term "magnetoelectric" was coined by P. Debye in 1926.