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Large magnetoelectric response in lead free BaTi1−xSnxO3/NiFe2O4 bilayer laminated composites

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Magnetoelectric studies on BaTi1−xSnxO3/NiFe2O4 (x = 0.07, 0.08, 0.09 and 0.10) lead-free bilayer laminated composites were investigated at 1 kHz and resonance frequencies. The pure phase formation of BaTi1−xSnxO3 and NiFe2O4 samples was… Click to show full abstract

Magnetoelectric studies on BaTi1−xSnxO3/NiFe2O4 (x = 0.07, 0.08, 0.09 and 0.10) lead-free bilayer laminated composites were investigated at 1 kHz and resonance frequencies. The pure phase formation of BaTi1−xSnxO3 and NiFe2O4 samples was confirmed by X-ray diffraction technique. The ferroelectric BaTi1−xSnxO3 layers of different compositions having large piezocoefficient were used for the ME studies. The composites displayed their maximum magnetoelectric voltage coefficient at resonance peaks related to the 1st radial mode. The thickness dependent magnetoelectric studies on composites with x = 0.08 revealed a giant magnetoelectric voltage coefficient of 24.53 V cm−1 Oe−1 at 285 kHz under bias field condition. Remarkably, a large self-biased magnetoelectric response of the order of ~ 2–5 V cm−1 Oe−1 at resonance was exhibited by the composites. The observed large and self-biased magnetoelectric response in BaTi1−xSnxO3/NiFe2O4 composites enables them to be a useful lead-free alternative for several magnetoelectric related applications.

Keywords: xsnxo3 nife2o4; lead free; magnetoelectric response; bati1 xsnxo3

Journal Title: Journal of Materials Science: Materials in Electronics
Year Published: 2019

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