  Thick film layered magnetoelectric composites consisting of ferromagnetic and
ferroelectric phases have been synthesized with nickel ferrite (NFO), cobalt
ferrite (CFO), La0.7Sr0.3MnO3 (LSMO), or La0.7Ca0.3MnO3 (LCMO) and lead
zirconate titanate (PZT). Structural, magnetic and ferromagnetic resonance
characterization shows evidence for defect free ferrites, but deterioration of
manganite parameters. The resistivity and dielectric constants are smaller than
expected values. The magnetoelectric effect (ME) is stronger in ferrite-PZT
than in manganite-PZT. The ME voltage coefficient aE at room temperature is the
highest in NFO-PZT and the smallest for LCMO-PZT. The transverse ME effect is
an order of magnitude stronger than the longitudinal effect. The magnitude of
aE correlates well with magnetic permeability for the ferrites.
