Recently, a muatiferoic sensor using the ME effect (magnetoelectric effect) by combining magnetism and piezo-electricity has been studied.. Up to the present, Terfenol-D was used as a magnetostrictive actuator material in the composite structure. however, Terfenol-D has faults such as weakness and high cost. Then, we used polycrystalline Fe-Ga-Al ribbon instead of Terfenol-D. Fe-Ga-Al ribbon has characteristics such as high magnetostriction, better mechanical properties and low cost. We prepared magnetic sensors using lamination forming of a Fe-Ga-Al ribbon/PZT. We measured output voltage and frequency dependency of these sensors in several alternative magnetic fields.
