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Wavy Fringes at Domain Boundaries in Barium Titanate Observed in the Electron Microscope
Author(s) -
Remaut G.,
Gevers R.,
Amelinckx S.
Publication year - 1967
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19670200223
Subject(s) - barium titanate , domain (mathematical analysis) , boundary (topology) , materials science , electron microscope , electron , optics , condensed matter physics , geometry , physics , mathematics , optoelectronics , dielectric , mathematical analysis , quantum mechanics
A series of numerically calculated fringe profiles shows that images of zig‐zag fringes superposed on wavy fringe patterns in BaTiO 3 result from three superposed ferro‐electric domain walls. The two outer walls being 90° boundaries, while the central interface is a 180° boundary which, in order to decrease the electrostatic energy, “meanders” between the two 90° walls.