Publications in Scientific Journals:
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.
English abstract:
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.
Keywords:
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
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1088/0953-8984/22/23/235903
Created from the Publication Database of the Vienna University of Technology.