ELECTRIC MOTOR AND FIELD ELEMENT

The present invention provides an electric motor including a bonded magnet that is effective in reducing the eddy current loss. The electric motor of the present invention comprises: an armature; a field element using a permanent magnet as a magnetic source; and a rotating shaft rotating together with the armature or the field element. The permanent magnet is a bonded magnet comprising magnet particles and a binder resin that binds the magnet particles to each other. The bonded magnet has a degree of electric resistance anisotropy (ρ1/ρ2) of 2 or more. The degree of electric resistance anisotropy is a ratio of a first electric resistivity (ρ1) measured in an axial direction and a second electric resistivity (p2) measured in a direction perpendicular to the axial direction. The bonded magnet is, for example, a compression-molded bonded magnet that contains 93% to 98.5% of the magnet particles, and the first electric resistivity is 300 µΩm or more. When the compression-molded bonded magnet whose compression direction is arranged along the axial direction is used as a field source, the eddy current loss occurring in the compression-molded bonded magnet can be efficiently reduced.