화학공학소재연구정보센터
Journal of Materials Science, Vol.46, No.16, 5394-5399, 2011
Processing and magneto-electric properties of sol-gel-derived Pb(Zr0.52Ti0.48)O-3-Ni0.8Zn0.2Fe2O4 2-2 type multilayered films
Pb(Zr0.52Ti0.48)O-3-Ni0.8Zn0.2Fe2O4 (PZT-NZFO) multilayered thin films with various volume fractions of the PZT phase (100, 74, 58, 48, 33, and 0%) were prepared on Pt/Ti/SiO2/Si substrates using sol-gel spin-coating method. X-ray diffraction shows polycrystalline structure and scanning electron microscopy reveals good multilayer morphology of the composite thin film as annealed at 700 A degrees C in air. The thickness of the composite films was estimated in the range of similar to 400 to similar to 600 nm. The ferroelectric and magnetic properties were measured as function of the volume fractions of the PZT phase. The magnetoelectric (ME) effect was investigated under various bias magnetic fields. The maximum ME voltage coefficient (alpha (E) = dE/dH) is 278 mV/cmOe for the composite film with the volume fractions of the PZT phase of similar to 48%.