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Dauphine twin lattice

Figure 36. Dauphine twin lattice in a-quartz close to the phase transition into the high-temperature /i-phase viewed along the threefold axis... Figure 36. Dauphine twin lattice in a-quartz close to the phase transition into the high-temperature /i-phase viewed along the threefold axis...
Fig. 7.7 (a) Projection of Si-atoms in a-quartz lattice to the (0001)-plane (simplified), (b) Dauphine twins one twin crystal is left from the twinning interface CD, second twin crystal is right from it and rotated by 60° about the optical c-axis. (c) Lattice structure of j8-quartz... [Pg.127]

Images made in unsplit reflections do not reveal brightness differences due to orientation differences of the lattice, but they may exhibit domain contrast due to differences in the structure factor. This is the case for Dauphine twins in quartz, which are related by a 180° rotation about... [Pg.1087]

See other pages where Dauphine twin lattice is mentioned: [Pg.128]    [Pg.129]   
See also in sourсe #XX -- [ Pg.1089 ]



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