Threshold fields for antiparallel ferroelectric domain wall motion

Details Threshold fields for antiparallel ferroelectric domain wall motion Threshold fields for antiparallel ferroelectric domain wall motion

2008-06-09

arxiv.org/abs/0806.1510v1

Physics

Condensed Matter

Materials Science

14 pages; 2 figures

Scientific paper

While an ideal antiparallel ferroelectric wall is considered a unit cell in width (~0.5nm), we show using phase field modeling that the threshold field for moving this wall dramatically drops by 2-3 orders of magnitude if the wall were diffuse by only ~2-3nm. Since antiparallel domain walls are symmetry allowed in all ferroelectrics, and since domain wall broadening on nanometer scale is widely reported in literature, this mechanism is generally applicable to all ferroelectrics.

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