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Pb0.90Sr0.10TiO3-CoFe2O4(PST10-CFO) nanostructured bilayered thin film were grown on Si (100) substrate by using metallo-organic decomposition chemical route and spin coating technique. Results show that PST (pervoskite structure) and CFO (spinel) phase coexist in the bilayered thin films, annealed at 650°C for 2hr and no obvious impurity phase can be detected. The structural, surface morphology and micro structural properties were confirmed by X-Ray diffraction (XRD), atomic force microscope (AFM) respectively. Excellent ferroelectric behavior at different voltage was observed, with two platinum electrodes only at surface of the bilayer thin film. A room temperature ferromagnetic behavior was observed in the bilayered Pb0.90Sr0.10TiO3-CoFe2O4 nanostructured thin film. The saturation magnetization and variation in coercivity value of the bilayer thin film is lower than that of the pure CFO film in the presence of non ferromagnetic PST layer which is the attributed that the significant coupling between the two phases. [ABSTRACT FROM AUTHOR]

Multiferroic 2-2 type bi-layered NFO/ (Pb0.80Sr0.20) TiO3 composite thin film on Pt/TiO2/Si substrate was prepared by novel metallo-Organic process using spin coating technique. The structural and surface morphology were confirmed by X-Ray diffraction (XRD) atomic force microscope (AFM). Significantly improved ferroelectric properties (Ps ~ 17.25, Pr ~8.02 µC/cm² and Ec ~ 404kV/cm) and magnetic properties (Ms ~ 117emu/cc, Mr ~ 0.83emu/cc and Hc ~ 20Oe) were observed at room temperature. The leakage current densities in NFO/PST composites film have been studied. Poole-Frankel bulk limited conduction mechanism dominates of film at relatively high electric filed. [ABSTRACT FROM AUTHOR]

Ni0.5Zn0.5Fe2O4(Ni-Zn) nanostructured thin films have been deposited on Si substrates by chemical solution method using metallo-organic precursors. These films were annealed at different temperature range 450°C-700°C for 2h. The crystalline orientation of the films was changed from (311) to (400) on increasing annealing temperature to 550°C. The crystallite size also increases from 5nm to 10nm. The saturation magnetization Ms∼302 emu/cm3, was measured for Ni-Zn thin films annealed at 700°C. The optical properties of Ni0.5Zn0.5Fe2O4 thin film such as refractive index (n), extinction coefficient (k), energy band gap, optical dielectric constant and conductivity have been extracted from the transmission spectrum measured in the wavelength range 400-1100nm. The refractive index and extinction coefficients of the Ni-Zn film have been obtained by the Swanepoel method. [ABSTRACT FROM AUTHOR]