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J. Sidoruk, J. Leist, H. Gibhardt, M. Meven, K. Hradil, G. Eckold:
"Quantitative determination of domain distribution in SrTiO3 - competing effects of applied electric field and mechanical stress";
Journal of Physics: Condensed Matter, 22 (2010), 23; 235903 - 235910.

Below its ordering temperature at 105 K, perovskite-type SrTiO3 exhibits a tetragonal phase with three different structural domains that are strongly influenced by the application of uniaxial mechanical stresses and electric fields. A careful neutron diffraction study of superlattice reflections provides full quantitative information about the varying domain distributions under external loads as a function of temperature. It is shown that electric field and uniaxial stress exhibit competitive effects and the simultaneous application leads to a complex redistribution behaviour of the tetragonal domains. The results are discussed in the context of the formation of a field induced ferroelectric phase at low temperatures. The experimental findings demonstrate that its polarization is always perpendicular to the tetragonal axis and the polar phase has orthorhombic symmetry.

77.80.Dj Domain structure; hysteresis 62.20.F- Deformation and plasticity 77.22.Ej Polarization and depolarization 77.80.Bh Phase transitions and Curie point 61.66.Fn Inorganic compounds 68.65.Cd Superlattices

http://dx.doi.org/10.1088/0953-8984/22/23/235903