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Published in:
01-09-2014
Dielectric and magnetoelectric properties of co-fired PbZr0.52Ti0.48O3–Co0.6Zn0.4Mn0.3Fe1.7O4–PbZr0.52Ti0.48O3 trilayer composites
Published in: Journal of Materials Science: Materials in Electronics | Issue 9/2014
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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 (α
E33
and α
E31
) were observed to be comparable in magnitude contrary to the usual trend (α
E31
much greater than α
E33
) for ME composite structures. The highest transverse ME voltage coefficient α
E31
~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).