Alnico magnets are widely used in industrial and consumer
applications where strong permanent magnets are needed; examples
are electric motors, electric guitar pickups, microphones, sensors,
louderspeakers, travelling-wave tubes, and cow magnets. In many
applications they are being superseded by rare earth magnets, whose
stronger fields (Br) and larger energy products (BHmax) allow smaller size magnets to be used for a given application.