Applied Physics Letters · 2018 · 23 citations · 25 references
Natural SciencesMaterials SciencePhysicsAcousticsElectromagnetismMagnetic MaterialsAmorphous Magnetic MaterialsFerroelectric MaterialsFerromagnetic MaterialsFerromagnetismMagnetic Properties Of SolidsPiezoelectric MaterialsAcoustic ResonanceHarmonicsLead Zirconate TitanateMagnetoelectric CouplingMagnetoelectric EffectNonlinear Piezoelectric ResponsePiezoelectric EffectPiezoelectric Properties
The strain mediated nonlinear converse magnetoelectric effect (CME) is investigated in a bilayer of an amorphous ferromagnet FeBSiC and piezoelectric lead zirconate titanate (PZT). The magnetic response of the sample to an AC electric field (e) applied to PZT at an acoustic resonance frequency of 76 kHz was measured with a coil wound around the bilayer. With an increase in the amplitude of e over the range 0–250 V/cm, the variation in amplitude of the first and the second harmonics of the induced voltage due to the variation in the magnetic induction B was measured for DC bias magnetic field H = 0–80 Oe. The coefficients of the linear and nonlinear converse ME effects were 5.5 G cm/V and 1.9 × 10−2 G cm2/V2, respectively. The nonlinearity of the CME arises due to the nonlinear dependence of the magnetic induction on the stress. A theoretical model for the nonlinear CME is discussed.
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