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Growth twinning in magnesium oxide smoke crystals

1979; Taylor & Francis; Volume: 39; Issue: 2 Linguagem: Inglês

10.1080/01418617908236890

0141-8610

R. R. Cowley, R. L. Segall, Roger St.C. Smart, Peter S. Turner,

Magnesium Oxide Properties and Applications

Abstract Growth twins in magnesium oxide are shown to occur when magnesium is burnt in air in the presence of water vapour. The twins are coherent and the external morphology shows mirror symmetry across the {111} composition plane. The significance of the existence and form of these twins in such a highly ionic material is considered in terms of the structure of the boundary layer and the role of the water vapour.