Difference between revisions of "TLS twinning"
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'''TLS (Twin Lattice Symmetry) twinning''' is a term employed to indicate twinning where the [[twin lattice]] does not possess a pseudo-symmetry, differently from what happens in [[TLQS twinning]]. | '''TLS (Twin Lattice Symmetry) twinning''' is a term employed to indicate twinning where the [[twin lattice]] does not possess a pseudo-symmetry, differently from what happens in [[TLQS twinning]]. | ||
| − | In TLS twinning, the lattice row / lattice plane [''uvw''] / (''hkl'') defining the cell of the [[twin lattice]] are mutually perpendicular. When this perpendicularity is imposed by the symmetry of the lattice, one speaks of ''intrinsic-TLS'' (''i-TLS''). In all other cases, the conditions of perpendicularity | + | In TLS twinning, the lattice row/lattice plane [''uvw''] / (''hkl'') defining the cell of the [[twin lattice]] are mutually perpendicular. When this perpendicularity is imposed by the symmetry of the lattice, one speaks of ''intrinsic-TLS'' (''i-TLS''). In all other cases, the conditions of perpendicularity depend on one or more metric parameters: one then speaks of ''extrinsic-TLS'' (''e-TLS''). |
[[Category:Twinning]] | [[Category:Twinning]] | ||
Latest revision as of 13:33, 17 May 2017
TLS (Twin Lattice Symmetry) twinning is a term employed to indicate twinning where the twin lattice does not possess a pseudo-symmetry, differently from what happens in TLQS twinning.
In TLS twinning, the lattice row/lattice plane [uvw] / (hkl) defining the cell of the twin lattice are mutually perpendicular. When this perpendicularity is imposed by the symmetry of the lattice, one speaks of intrinsic-TLS (i-TLS). In all other cases, the conditions of perpendicularity depend on one or more metric parameters: one then speaks of extrinsic-TLS (e-TLS).