Enhancing the magnetoelectric response of Terfenol-D/polyvinylidene fluoride/Terfenol-D laminates by exploiting the shear mode effect

Meng Chien Lu, Lei Mei, Dae Yong Jeong, Jing Xiang, Huaqing Xie, Q. M. Zhang

    Research output: Contribution to journalArticle

    20 Scopus citations

    Abstract

    Magnetoelectric (ME) composites have demonstrated high sensitivity for magnetic field sensor applications. Here, we report a ME laminate heterostructure consisting of magnetostrictive Tb0.3Dy0.7Fe1.92 (Terfenol-D) alloy and piezoelectric polyvinylidene fluoride (PVDF) layers, both operated in shear mode. We show that the shear mode ME sensor exhibits a marked improved ME effect compared with the traditional ME composites operated in longitudinal and transverse piezoelectric and magnetostrictive modes using the same materials. A giant ME coefficient of 7.93 V/(cm·Oe) is obtained under a DC magnetic bias of 2300 Oe. The improved ME coefficient derives from the shear-mode heterostructure design, which allows both the Terfenol-D and PVDF to operate in shear mode that has maximum magnetoelectrical coupling coefficient.

    Original languageEnglish (US)
    Article number112905
    JournalApplied Physics Letters
    Volume106
    Issue number11
    DOIs
    StatePublished - Mar 16 2015

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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