Nontoxic lead-free multiferroic composites are synthesized by incorporating the dispersed 0.3CoFe₂O₄ (CFO) ferromagnetic nanoparticles into 0.7(K_0.5Na_0.5) 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 mV⋅cm^-1⋅Oe^-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.

Keywords:

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

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