Application of elastostatic Green function tensor technique to electrostriction in cubic, hexagonal and orthorhombic crystals

Details Application of elastostatic Green function tensor technique to electrostriction in cubic, hexagonal and orthorhombic crystals Application of elastostatic Green function tensor technique to electrostriction in cubic, hexagonal and orthorhombic crystals

2002-06-18

arxiv.org/abs/cond-mat/0206351v1

Physics

Condensed Matter

Materials Science

4 pages

Scientific paper

10.1088/0953-8984/15/33/309

The elastostatic Green function tensor approach, which was recently used to treat electrostriction in numerical simulation of domain structure formation in cubic ferroelectrics, is reviewed and extended to the crystals of hexagonal and orthorhombic symmetry. The tensorial kernels appearing in the expressions for effective nonlocal interaction of electrostrictive origin are derived explicitly and their physical meaning is illustrated on simple examples. It is argued that the bilinear coupling between the polarization gradients and elastic strain should be systematically included in the Ginzburg-Landau free energy expansion of electrostrictive materials.

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