Modeling of Toroidal Ordering in Ferroelectric Nanodots

Report No. ARL-TR-4165
Authors: Joshua C. Crone and Peter W. Chung
Date/Pages: June 2007; 25 pages
Abstract: This report details progress and the completed study of ferroelectric properties in nanodots for potential application to toroidal ordering concepts in nonvolatile memory materials. The work was performed under support through the Student Temporary Employment Program at the U.S. Army Research Laboratory. Beginning with an introduction of basic concepts, the report reviews the current state-of-the-art of ferroelectric nanodot technology through a literature review and identifies areas of need for continued study. As part of the review, Ewalds summation for Coulomb interactions in periodic crystals, a critical contribution to the atomistic energy that enables the long-range ordering in ferroelectric solids, was derived and is presented in the appendix.
Distribution: Approved for public release
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Last Update / Reviewed: June 1, 2007