Much attention has been focused on magnetic hyperthermia due to its great potential to be a cancer treatment.Different from other approaches developed to raise the temperature of the tumor,magnetic hyperthermia heats the cancerous tissues through inductively heating the pre-implanted single-domain magnetic nanoparticles.The particles convert the magnet work done by the field to the internal energy of the particles via the mechanism called "hysteresis losses".Consequently,the temperature of particles can be increased rapidly.Then,the heat is released to the surrounding tissue to treat the tumor.