On the relations between structure and morphology of crystals. II

  • Hartman P
  • Perdok W
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Abstract

cf. C.A. 49, 7313i. The characteristic features of S-faces (stepped faces, i.e. faces parallel to one periodic bond chain only) are further developed. After giving some definitions, a discussion follows of the factors detg. the morphological importance of S-faces. The conclusion is drawn that the development of S-faces in a particular zone can be represented by an addn. scheme of indexes and that an S-face is the more important, the greater the relative strength of the bonds in the periodic bond chain to which it is parallel. An outline is given of the way in which the morphology of an actual crystal can be derived from the structure. This is illustrated in the case of cubic closest packing. The result is that the octahedron is the most important form, followed by the cube, provided crystn. takes place from the vapor. Crystn. from the melt involves the consideration of precondensation effects. In this case the influence of the strongest bond on the morphology diminishes and weaker bonds become more important. This leads to a preponderance of the cube, a relation actually observed with Cu. [on SciFinder(R)]

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APA

Hartman, P., & Perdok, W. G. (1955). On the relations between structure and morphology of crystals. II. Acta Crystallographica, 8(9), 521–524. https://doi.org/10.1107/s0365110x55001679

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