D centred cell

From Online Dictionary of Crystallography

(Difference between revisions)
Jump to: navigation, search
(Tidied translations and added German and Spanish (U. Mueller))
m
 
Line 11: Line 11:
== See also ==
== See also ==
-
*[[Centred lattices]]
+
*[[Centred lattice]]
*[[H centred cell]]
*[[H centred cell]]
*Chapter 1.5.3.1 of ''International Tables for Crystallography, Volume A,'' 6th edition
*Chapter 1.5.3.1 of ''International Tables for Crystallography, Volume A,'' 6th edition
[[Category:Fundamental crystallography]]
[[Category:Fundamental crystallography]]

Latest revision as of 13:38, 29 November 2017

Maille centrée D (Fr). D-zentrierte Zelle (Ge). Cella centrata D (It). D 複合単位胞 (Ja). Celda (o red) centrada D (Sp).


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