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    Finite-size effects in BaTiO3 nanowires

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    Finite-size effects ... (187.0Kb)
    Identificadores
    URI: http://hdl.handle.net/10902/4175
    DOI: 10.1063/1.2186104
    ISSN: 0003-6951
    ISSN: 1077-3118
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    Author
    Geneste, Grégory; Bousquet, Eric; Junquera Quintana, Francisco JavierAutoridad Unican; Ghosez, Philippe
    Date
    2006-03
    Derechos
    © 2006 American Institute of Physics
    Publicado en
    Applied Physics Letters, vol. 88, iss. 11, art. num. 112906 (2006)
    Publisher
    American Institute of Physics
    Enlace a la publicación
    http://dx.doi.org/10.1063/1.2186104
    Palabras clave
    Nanowires
    Ozone
    Ferroelectric thin films
    Lattice constants
    Ferroelectricity
    Polarization
    Ferroelectric devices
    Surface phase transitions
    Surface states
    Thin film structure
    Abstract:
    The size dependence of the ferroelectric properties of BaTiO 3 nanowires is studied from first principles. We show that the ferroelectric distortion along the wire axis disappears below a critical diameter of about 1.2nm . This disappearance is related to a global contraction of the unit cell resulting from low atomic coordinations at the wiresurface. It is shown that a ferroelectric distortion can be recovered under appropriate tensile strain conditions.
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    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España