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Influence of substrates on the statical and dynamical properties of ferroelectric thin films
Author(s) -
Wesselinowa J. M.,
Dimitrov Al. B.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200642407
Subject(s) - ferroelectricity , materials science , condensed matter physics , substrate (aquarium) , thin film , soft modes , dielectric , phase transition , polarization (electrochemistry) , composite material , ultimate tensile strength , transverse plane , dielectric response , nanotechnology , optoelectronics , chemistry , physics , structural engineering , oceanography , geology , engineering
Based on the transverse Ising model using a Green's function technique it is shown that the influence of the substrate induces strong changing of various statical and dynamical properties due to different exchange interactions between the ferroelectric thin film and the substrate. Properties such as the phase transition temperature, the polarization, the soft‐mode energy, the damping and the dielectric function were found to be highly dependent upon the magnitude and the kind (tensile or compressive) of the stress due to the substrate. There is some competition between the surface and substrate effects. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)