Electric machine with low magnetic slot leakage

An electric machine, comprising:

• a stator with electric coils;
• and
• a rotor interacting with the stator,
• at least one member selected from the group consisting of the stator and the rotor includes an active part including at least two slots for arranging an electric coil winding of an electric coil, and a crosspiece arranged between the two slots and made of a material for conducting a magnetic flux through the electric coil which surrounds the crosspiece, with the material having, at least in one area, magnetic anisotropy with an easy magnetization axis, which is oriented parallel or at least at an angle of less than 25° with respect to a coil axis of the coil, and a hard magnetization axis, said crosspiece configured to form for each of the slots a slot wall which contains the material, said crosspiece including a core made of an isotropic soft-magnetic material.

A method for manufacturing an active part, comprising:

• forming slots for arranging coil windings of an electric coil;
• forming between adjacent ones of the slots a crosspiece such as to form for each of the slots a slot wall that contains a material having magnetic anisotropy with an easy magnetization axis, which is oriented parallel or at least at an angle of less than 25° with respect to a coil axis of the electric coil, and a hard magnetization axis;
• and
• providing the crosspiece with a core of an isotropic soft-magnetic material.