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(Color online) Piezoelectric strain response of (011) PMN-PT along y direction under different bipolar sweeping electric fields. The drawing shows the sample configuration and the coordinate. The arrows indicate the directions of the bipolar electric fields.
(Color online) Piezoelectric strain difference ɛ y− ɛ x as a function of applied electric field within ± E cr. The initial point A is defined as the strain free state of as deposited Ni film. The loop B-C-D-E-B shows a complete strain hysteresis. The drawings indicate the magnetization state: (B) and (C) easy axis along y , (D) and (E) easy axis along x .
(Color online) Normalized Kerr rotation hysteresis curves ( M-H ) along (a) x direction and (b) y direction under different electric fields (Letters are the representative of the labeled strain states of the hysteresis loop in the Fig. 2.)
(Color online) (a) Magnetic single domain configurations of an 80 nm diameter 8 nm thick Ni nanodisk under applied strains of 0 ppm (A), −700 ppm (C), and +700 ppm (E), computed from micromagnetic simulation; (b) A hysteresis loop of the TMR as a function of applied electric field accompanied with the magnetization switching.
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