An electric machine having a stator (2), and a rotor (3) which rotates with respect to the stator (2) about an axis of rotation (A); the rotor (3) having rotor segments (7) arranged about the axis of rotation (A); each rotor segment (7) having at least a first module (15) and a second module (16) of material with magnetic properties, and arranged radially, more specifically aligned radially with each other, with respect to the axis of rotation (A); and the electric machine being characterized in that the first module and second module (15, 16) have different magnetic characteristics.