Difference between revisions of "Partial structure"
From Online Dictionary of Crystallography
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<font color="blue">Structure partielle</font> (''Fr''). | <font color="blue">Structure partielle</font> (''Fr''). | ||
| − | The crystal structure formed by a subset of elements and their symmetry equivalents | + | The crystal structure formed by a subset of elements and their symmetry equivalents. |
| − | In describing a crystal structure it is sometimes convenient to | + | In describing or analyzing a crystal structure it is sometimes convenient to consider only the structure formed by the selected atoms. |
'''Example''' | '''Example''' | ||
Latest revision as of 07:34, 2 June 2020
Structure partielle (Fr).
The crystal structure formed by a subset of elements and their symmetry equivalents.
In describing or analyzing a crystal structure it is sometimes convenient to consider only the structure formed by the selected atoms.
Example
The structure of [math]BaTiO_3[/math] is tetragonal with a primitive unit cell and lattice constants [math]a[/math] and [math]c[/math]. The partial structure of Ba has the same lattice constants whereas the partial structure of O has also a primitive cell but with the lattice constant [math]a_O = a/ \sqrt{2}[/math], [math]c[/math] being equal
See synonymous Substructure