Twinning of isostructural crystals
Hahn, Th. and
Klapper, H.,
International Tables for Crystallography
(2013).
Vol. D,
Section 3.3.8.6,
p.
[ doi:10.1107/97809553602060000917 ]
of crystals
In the present section, the critical discussion of the lattice theory of twinning is extended from the individual crystal species, treated in Section
3.3.8.5, to the occurrence of merohedral twinning in series ...
Twin obliquity and lattice pseudosymmetry
Hahn, Th. and
Klapper, H.,
International Tables for Crystallography
(2013).
Vol. D,
Section 3.3.8.5,
p.
[ doi:10.1107/97809553602060000917 ]
]. The twin obliquity is thus a quantitative (angular) measure of the pseudosymmetry of a lattice and, hence, of the deviation which the twin lattice suffers in crossing the composition plane (cf. Section
3.3.8.1).
The smallest mesh of the net ...
Lattice aspects of twinning
Hahn, Th. and
Klapper, H.,
International Tables for Crystallography
(2013).
Vol. D,
Section 3.3.8,
p.
[ doi:10.1107/97809553602060000917 ]
to the previous ` macles tripériodiques ', see Section
3.3.8.2 below. These concepts were further developed by Niggli (1919, 1920/1924/1941). 5
The lattice aspects of twinning (triperiodic twins) are discussed in this section ...
Twins with three-dimensional twin lattices (`triperiodic' twins)
Hahn, Th. and
Klapper, H.,
International Tables for Crystallography
(2013).
Vol. D,
Section 3.3.8.3,
p.
[ doi:10.1107/97809553602060000917 ]
This twinning does not occur systematically among the cases listed in Table
3.3.8.1, except for special metrical relations. Example: a primitive orthorhombic lattice with and twin reflection plane or . The coincidence lattice is hexagonal ...
