1328 マルチフェロイクス効果を利用したコンポジットアクチュエータ・センサ材料の開発(J14-6 知的材料・構造システム(6) 圧電・磁歪センサ,ジョイントセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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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.
2008-08-02