D centred cell
From Online Dictionary of Crystallography
Revision as of 15:28, 10 April 2017 by MassimoNespolo (talk | contribs) (→See also: 6th edition of ITA)
Revision as of 15:28, 10 April 2017 by MassimoNespolo (talk | contribs) (→See also: 6th edition of ITA)
Maille centrée D (Fr); Cella centrata D (It); D 複合単位胞 (Ja).
The D centred cell is used for the rhombohedral description of the hexagonal lattice. Six right-handed D cells with basis vectors of equal length are obtained from the hP cell by means of one of the following transformation matrices:
D1: 10-1/01-1/111 D2: -101/0-11/111
the other four D cells are obtained by cyclic permutation of the basis vectors.
The resulting hD cell has centring nodes at 1/3,1/3,1/3 and 2/3,2/3,2/3
See also
- Centred lattices
- H centred cell
- Section 1.5.3.1 in the International Tables for Crystallography, Volume A, 6th edition