Magnetostrictive micro-actuator used for head servo

The invention discloses a super-magnetostrictive actuator for the magnetic head servo, including the magnetic circuit, the super-magnetostrictive actuator block, the flexible linking board, the linking pad, the pad wire, the coil pad, the fixed pad, the access point, the flexible wire, the inner and outer magnetic shielding layer, the embedded snail loop and the single crystal silicon spring. The invention uses the giant magnetostrictive effect of special materials, machining and molding in the magnetic head slider with conjunction manufacturing techniques, and producing a two-way servo movement by the use of permanent magnets or repeating addition of DC bias current in driven current. This super-magnetostrictive actuator can work in a lower voltage; can output greater driving force, and response speed over piezoelectric ceramic materials, and no failure of the Curie point.