title: Pulsed laser deposition and ferroelectric characterization of nanostructured perovskite lead zirconate titanate (52/48) thin films.
abstract: Perovskite lead zirconate titanate nanostructured (PZT) thin films with Zr/Ti ratio of 52/48 were deposited on Pt/TiO2/SiO2/Si(100) substrate using pulsed laser deposition method. A metal/ ferroelectric/metal (MFM) structure was used for ferroelectric property measurements, formed by depositing gold electrode on top of the film. A Nd:YAG UV laser having a wavelength of 355 nm and an energy fluence of -2.7 J/cm2 was used to deposit the film. The film was deposited on platinum (Pt) coated silicon substrate at the substrate temperature of 600 degrees C and the base vacuum of 10(-6) mbar. The scanning electron microscopy (SEM) images revealed well-crystallized films with a fine microstructure and an average grain size of - 50 nm. The ferroelectric properties of the film were studied and the results were discussed. The voltage dependent Polarization versus Electric field hysteresis measurements of PZT (52/48) pellet showed a well-defined hysteresis loop with a fairly high remnant polarization (P(r)) and low coercive field (E(c)).
authors.affiliation: Department of Physics, B.S. Abdur Rahman University, Vandalur, Chennai, Tamilnadu 600048, India.
authors.forename: M
authors.initials: M
authors.lastname: Prabu
authors.forename: I B Shameem
authors.initials: IB
authors.lastname: Banu
authors.forename: G V
authors.initials: GV
authors.lastname: Vijayaraghavan
authors.forename: S
authors.initials: S
authors.lastname: Gobalakrishnan
authors.forename: Murthy
authors.initials: M
authors.lastname: Chavali