Abstract
Magnetoelectric composite thin films of 2–2 type attract significant attention due to potentially high magnetoelectric (ME) coupling and ease of miniaturization. PbZr0.52Ti0.48O3 (PZT) and NiFe2O4 (NFO) have been among the materials of interest for the development of such composites, however, the obtained values of ME coefficients were sufficiently low so far. Also, these works report ME coupling in micrometer thick composite films. Here, we report strong magnetoelectric coupling (maximum longitudinal ME coefficient ≈ 1.2 V/cm⋅Oe at 100 kHz) obtained in nanograined PZT-NFO-PZT thin films of nanometer thickness fabricated on Si/SiO2/Ti/Pt substrates by sol–gel spin coating technique. This is a strong magnetoelectric coupling recorded in thin film composites involving ferrites at sub-resonant conditions and can be used in miniature transducers and sensors and for data processing devices.
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