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Erschienen in:
2011 | OriginalPaper | Buchkapitel
6. Symmetry Analysis for Crystals and the Use of the International Tables
verfasst von : Professor Dr. Yoshio Waseda, Professor Dr. Eiichiro Matsubara, Professor Kozo Shinoda
Erschienen in: X-Ray Diffraction Crystallography
Verlag: Springer Berlin Heidelberg
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Abstract
A crystal may be defined as a solid composed of atoms arranged on a regular threedimensional lattice and such periodicity in the atomic distribution features their structure. The geometry of atomic distributions in crystals is known to be characterized by the repetition, such as lattice translation (see Chap. 2). In addition to lattice
translations, we find reflection and rotation. In these cases, an object is brought into coincidence with itself by reflection in a certain plane; rotation upon around a certain axis; or reflection in a certain plane. The repetition of a pattern by specific rules characterizes all symmetry operations and their fundamental points are given below.