Abstract
(1 − x)(Ni0.8Zn0.1Cu0.1)Fe2O4/x0.48Pb(Ni1/3Nb2/3)O3–0.02Pb(Zn1/3Nb2/3)O3–0.05Pb(Ni1/2W1/2)O3–0.45PbTiO3 ((1 − x)NZCF/xPNZNWT) magnetoelectric particulate ceramic composites were prepared by the conventional solid-statereaction method via a low-temperature sintering process. X-ray diffraction (XRD)measurements and scanning electron microscopy (SEM) observation confirm that ferrite andpiezoelectric phases coexist in the sintered particulate composites. With the addition ofsintering aids, densified ceramic composites can be prepared by the low-temperaturesintering technique, which can improve the dielectric properties of the synthesized(1 − x)NZCF/xPNZNWT composites. The(1 − x)NZCF/xPNZNWT compositesexhibit typical P–E hysteresis loops, where remnant polarizationPr decreases andcoercive field Ec increases accompanied by the decrease of piezoelectric constantd33 with the increase of the ferrite phase incorporated into thecomposites. Although a magnetoelectric (ME) voltage coefficient of just7.34 mV (cm Oe) − 1 is obtained in the 0.2NZCF/0.8PNZNWT composite, it is expected to be comparable tothat of the reported bulk composites when the magnitude of the ac magnetic field increasesand the frequency of the ac magnetic field increases to the resonant frequency of thepiezoelectric phase.
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