Abstract
A simple one dimensional variational model designed to mimic bulk and surface energy effects which govern the shape of some phase boundaries in crystals provides nontrivial periodic solutions which may have arbitrarily small period. These solutions are stable (unstable) when the corresponding period is sufficiently large (small), and the critical period measures the ratio of surface energy to bulk energy.
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Parry, G.P. Stable periodic phase boundaries in unloaded crystals. Continuum Mech. Thermodyn 1, 305–314 (1989). https://doi.org/10.1007/BF01125779
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DOI: https://doi.org/10.1007/BF01125779