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Concave and convex shapes of the Pn3m/L1 interface
P Pieranski1, M Bouchih2, N Ginestet2
1Laboratoire de Physique des Solides, Université Paris-Sud, Bât. 510, 91405, Orsay Cedex, France. pieranski@lps.u-psud.fr.
Abstract:
Shapes of the interface between the L1 and cubic Pn3 m phases in the mixture C(12)EO(2)/water are studied. The concave and convex variants of the interface are realised using Pn3 m crystals surrounded by the L1 phase and L1 inclusions on surfaces and in the bulk of the Pn3 m phase. It is shown that both variants of the Pn3 m/L1 interface contain the (111)-type facets in coexistence with everywhere else rough surfaces. The matching between facets and curved parts of the interface is angular. In the vicinity of the upper limit of the L1 + Pn3 m coexistence domain, additional (200)-type facets appear on the interface. The influence of the contact angle at glass walls on shapes of crystals and of inclusions is discussed.
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