  The synthesis of layered ferrite-lead titanate zirconate (PZT) and lanthanum
nanganite-PZT and the observation of giant magneto-electric interactions are
discussed. The ferrites used in our studies included pure and Zn substituted
cobalt-, nickel- and lithium ferrites. Ferromagnetic manganites used included
both calcium and strontium substituted systems. The samples were prepared from
10-40 mm thick films obtained by tape-casting. Our studies showed strong ME
coupling in manganite-PZT and cobalt zinc ferrite-PZT, and a giant ME effect in
nickel zinc ferrite-PZT. We found evidence for Zn assisted enhancement in ME
coefficients that were attributed to low anisotropy and high permeability that
resulted in favorable magneto-mechanical coupling in the composites.
