Multiferroic nanocomposite thin films containing Pb(Zr0.52Ti0.48)O3(PZT) and CoFe2O4(CFO) with a novel nanostructure are deposited on (1 0 0)-oriented Nb-doped SrTiO3(STO) substrates by pulsed-laser deposition. Structural characterizations show that only PZT and CFO phases exist in the composite films, and the perovskite-structured PZT nano-pyramids with diameters of 50-100 nm are randomly embedded in the spinel-structured polycrystalline CFO matrix. Ferroelectric and magnetic hysteresis loops are simultaneously observed at room temperature. Magnetic-field-dependent capacitance measurement reveals an increase in capacitance of about 1.46% with an applied magnetic field. The multiferroic properties in the nanocomposite are also characterized by ferroelectric and magnetic domain imaging in the local areas of the sample.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films