TY - JOUR KW - Thin films KW - Electrodes KW - Substrates KW - Internal stresses KW - Elasticity KW - Polarization KW - Epitaxial growth KW - Permittivity KW - Dielectric susceptibility KW - Ferroelectric devices KW - Ferroelectric films KW - Differential equations KW - Free energy KW - Elastic strain tensor AU - A.L Roytburd AU - S.P Alpay AU - V Nagarajan AU - C.S Ganpule AU - S Aggarwal AU - E.D Williams AU - Ramamoorthy Ramesh AB - A study was carried out with the aim of formulating an approach to determine internal stresses in the constrained ferroelectric (FE) films using its electrical and electromechanical characteristics. As a first step, an attempt was made to clarify the theoretical background for electromechanical properties of constrained FE films. Following this, available experimental work was analyzed from this point of view. Overall, it was confirmed that the mechanical characteristics of the films can be determined through the electric response of constrained films. BT - Physical Review Letters DO - 10.1103/PhysRevLett.85.190 LA - eng M1 - 1 N1 - cited By 118 N2 - A study was carried out with the aim of formulating an approach to determine internal stresses in the constrained ferroelectric (FE) films using its electrical and electromechanical characteristics. As a first step, an attempt was made to clarify the theoretical background for electromechanical properties of constrained FE films. Following this, available experimental work was analyzed from this point of view. Overall, it was confirmed that the mechanical characteristics of the films can be determined through the electric response of constrained films. PB - American Inst of Physics, Woodbury, NY, United States PY - 2000 SP - 190 EP - 193 T2 - Physical Review Letters TI - Measurement of internal stresses via the polarization in epitaxial ferroelectric films VL - 85 SN - 00319007 ER -