Dresden 2011 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 44: Functional Materials II

MM 44.10: Talk

Friday, March 18, 2011, 12:45–13:00, IFW A

Magnetoelectric FeCoBSi/PVDF bilayers — •Kerstin Meurisch, Robert Jahns, Eric Woltermann, Thomas Strunskus, Vladimir Zaporojtchenko, and Franz Faupel — Tecnical Faculty of the University of Kiel, Germany

In Magnetoelectric composites magnetostrictive and piezoelectric materials are combined in a way that changes in the dimension of the magnetostrictive material by an external magnetic field will lead to a measurable polarization change of the piezomaterial. It was already demonstrated that laminates fabricated by gluing of a FeCoBSi foil to a PVDF (polyvinylidene fluoride) foil provide a fairly high magnetoelectric response [1], but downsizing and integration into devices is rather complicated. To avoid these problems and to achieve a better mechanical coupling at the metal-polymer interface we deposited the FeCoBSi directly onto a piezoelectric PVDF foil by DC magnetron sputtering. An in situ applied magnetic bias field was used to improve the magnetic field direction sensitivity. The influence of the substrate preparation, sensor design and sputter parameters on the magnetoelectric output signal will be discussed.[1] Zhai, J.; Dong, S.; Xing, Z.; Li, J. & Viehland, D;. Giant magnetoelectric effect in Metglas/polyvinylidene-fluoride laminates; Appl. Phys. Lett.; 2006, 89, 083507