Magnetic domain-wall motion study under an electric field in a [formula omitted] thin film on flexible substrate.

We study the influence of applied in-plane elastic strains on the static magnetic configuration of a 530 nm magnetostrictive FeCuNbSiB ( Finemet ® ) thin film. The in-plane strains are induced via the application of a voltage to a piezoelectric actuator on which the film/substrate system was glued. A quantitative characterization of the voltage dependence of the induced-strain at the surface of the film was performed using a digital image correlation technique. Magnetic Force Microscopy (MFM) images at remanence ( H =0 Oe and U =0 V) clearly reveal the presence of weak stripe domains. The effect of the voltage-induced strain shows the existence of a voltage threshold value for the strike configuration break. For a maximum strain of ε XX ~ 0.5 × 10 − 3 we succeed in destabilizing the stripes configuration helping the setting up of a complete homogeneous magnetic pattern. [ABSTRACT FROM AUTHOR]