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MULTIFERROISM AND MAGNETOELECTRIC COUPLING IN NANO-MICROSCALE LEAD-FREE COMPOSITE BY 0.3Co-FERRITE AND 0.7(K0.5Na0.5)NbO3-BASED FERROELECTRIC MATRIX

    https://doi.org/10.1142/S0217979211059115Cited by:4 (Source: Crossref)

    Nontoxic lead-free multiferroic composites are synthesized by incorporating the dispersed 0.3CoFe2O4 (CFO) ferromagnetic nanoparticles into 0.7(K0.5Na0.5) NbO3-LiSbO3 (KNN-LS5.2) ferroelectric micromatrix. The multiferroicity of the composite can be verified by polarization-electric field hysteresis loop and magnetic hysteresis loop. The composite exhibits excellent magnetic properties. A dilution effect is observed in magnetic hysteresis loops. The field dependence of ME voltage coefficient is given as a function of magnetic field from -4 kOe to 4 kOe with a maximum magnetoelectric voltage coefficient of 10.7 mVcm-1Oe-1 at the frequency of 1 kHz. It is a very high value in the lead-free magnetoelectric composites system for the potential use on multifunctional devices.

    PACS: 75.80.+q, 77.65.-j, 77.84
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