Abstract
In this paper we report the dielectric and magnetoelectric (ME) properties of co-fired Pb0.52Ti0.48O3–Co0.6Zn0.4Mn0.3Fe1.7O4–PbZr0.52Ti0.48O3 (PZT–CZFMO–PZT) trilayer composites prepared using Mn and Zn simultaneously substituted CoFe2O4 (Co0.6Zn0.4Mn0.3Fe1.7O4) as a magnetostrictive phase. For PZT–CZFMO–PZT composites, the maximum values of longitudinal and transverse ME voltage coefficient (αE33 and αE31) were observed to be comparable in magnitude contrary to the usual trend (αE31 much greater than αE33) for ME composite structures. The highest transverse ME voltage coefficient αE31 ~64 mV/cm Oe (at an applied ac magnetic field of frequency ~1 kHz) was obtained for the composite containing the thickest layer of CZFMO. The dielectric constant spectra for PZT–CZFMO–PZT composites demonstrated very high values of resonance frequency (~47–81 MHz) and band width (~9–13 MHz).
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