Authors: M Tyunina I Jaakola M Plekh J Levoska
Publish Date: 2008/02/13
Volume: 24, Issue: 1, Pages: 15-19
Abstract
In epitaxial films of perovskite ferroelectrics functionality can be controlled by sizestrainsurface effects Experimental evidence of such a possibility is demonstrated in epitaxial heterostructures of BaTiO3 thin films and of BaSrTiO3 superlattices grown by pulsed laser deposition on La05Sr05CoO3/MgO 001 In epitaxial BaTiO3 films temperature of phase transition is shown to be a function of inplane biaxial strain and film thickness In epitaxial BaSrTiO3 superlattices the dielectric permittivity tunability and temperature of phase transition are shown to be a function of strain and superlattice period The technological and principal problems limiting nanoscale engineering of ferroelectric functionality are also discussed
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