%0 Journal Article %K Thin films %K Electrodes %K Substrates %K Internal stresses %K Elasticity %K Polarization %K Epitaxial growth %K Permittivity %K Dielectric susceptibility %K Ferroelectric devices %K Ferroelectric films %K Differential equations %K Free energy %K Elastic strain tensor %A A.L Roytburd %A S.P Alpay %A V Nagarajan %A C.S Ganpule %A S Aggarwal %A E.D Williams %A Ramamoorthy Ramesh %B Physical Review Letters %D 2000 %G eng %I American Inst of Physics, Woodbury, NY, United States %P 190-193 %R 10.1103/PhysRevLett.85.190 %T Measurement of internal stresses via the polarization in epitaxial ferroelectric films %V 85