Ferrite magnet (also known as ceramic magnet )is a metal oxide with ferromagnetism. In terms of electrical characteristics, the resistivity of ferrite is much larger than that of metal and alloy magnetic materials, and it also has higher dielectric properties. The magnetic properties of ferrite also show high permeability at high frequencies. Ferrite magnets are commonly used in various applications in the past several decades, such as the loudspeaker, motor, and generators.