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UNIT CELL DETERMINATION AND REFINEMENT

As we established in Chapter 1, crystal lattices, used to portray periodic three-dimensional crystal structures of materials, are constructed by translating an identical elementary parallelepiped - the unit cell of a lattice -in three dimensions. Even when a crystal structure is aperiodic, it may still be represented by a three-dimensional unit cell in a lattice that occupies a superspace with more than three dimensions. In the latter case, conventional translations are perturbed by one or more modulation functions with different periodicity. [Pg.399]


Unit cell determination and refinement 5.8.1 Indexing example LaNi4,8sSno,is... [Pg.433]

Peak positions are also used for unit cell determination and refinement, where a, b and c unit cell lengths and angles a, p, y can be determined. [Pg.13]


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