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- W1526411437 abstract "In recent years ferroelectric thin films have received an enormous amount of attention due to their potential use in electronic device applications. Bismuth ferrite lead titanate (xBiFeO3 � (1-x)PbTiO3) thin films are of special interest due to their multiferroic nature, exceptionally high tetragonality and high switchable polarization close to the morphotropic phase boundary.This work encompasses an initial structural investigation into xBiFeO3 � (1-x)PbTiO3 thin films deposited onto Pt/TiOx/SiO2/Si substrates by pulsed laser deposition. The effect of substrate orientation, film composition and filmthickness are described as well as the growth mechanisms and interactions at the substrate � film interface.The pulsed laser deposition conditions were optimized to produce crystalline stoichiometric films of tetragonal and mixed phase tetragonal �rhombohedral phases. The films structure and growth mechanisms were studied using x-ray diffraction, scanning electron microscopy and atomicforce microscopy. It was found that the substrate orientation, film composition and film thickness determine the structural properties of the deposited film.A critical film thickness of 290 nm was identified as the minimum for a piezoelectric response to be observed. The piezoelectric nature of the films was confirmed by piezoforce microscopy.Transmission electron microscopy analysis revealed the occurrence of interdiffusion at the substrate � film interface between the platinum bottom electrode and bismuth from within the deposited film. A strontium ruthanatebuffer layer was deposited by pulsed laser deposition which prevented the interdiffusion, however local diffusion with the xBiFeO3 � (1-x)PbTiO3 deposited film was still present." @default.
- W1526411437 created "2016-06-24" @default.
- W1526411437 creator A5029881647 @default.
- W1526411437 date "2011-09-01" @default.
- W1526411437 modified "2023-09-23" @default.
- W1526411437 title "A structural study of BiFeO3 - PbTiO3 thin films depositedby pulsed laser deposition" @default.
- W1526411437 hasPublicationYear "2011" @default.
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