Table 2.4.5.3

Vacher, R.; Courtens, E.

doi:10.1107/97809553602060000641

International
Tables for
Crystallography
Volume D
Physical properties of crystals
Edited by A. Authier

pdf | chapter contents | chapter index | related articles

International Tables for Crystallography (2006). Vol. D. ch. 2.4, p. 332

Table 2.4.5.3

R. Vacher^a ^* and E. Courtens^a

^a Laboratoire des Verres, Université Montpellier 2, Case 069, Place Eugène Bataillon, 34095 Montpellier CEDEX, France
Correspondence e-mail: rene.vacher@ldv.univ-montp2.fr

Table 2.4.5.3 | top | pdf |
Tetragonal $[T{_1}]$ and hexagonal $[H{_1}]$ Laue classes: longitudinal modes

This table, written for the class $[T{_1}]$ , is also valid for the class $[H{_1}]$ with the additional relations $[c_{66} = {\textstyle{1 \over 2}}(c_{11} - c_{12})]$ ; $[p_{66} = {\textstyle{1 \over 2}}(p_{11} - p_{12})]$ .

$[\hat{\bf Q}= \hat{\bf u}]$	C	$[{\bf e}={\bf e}']$	$[\beta]$
	$[c_{11}^{}]$		$[p_{12}^2 /c_{11}^{}]$
	$[c_{11}^{}]$		$[p_{31}^2 /c_{11}^{}]$
	$[c_{33}^{}]$		$[p_{13}^2 /c_{33}^{}]$
	$[c_{33}^{}]$		$[p_{13}^2 /c_{33}^{}]$
$[(1,1,0)/\sqrt 2 ]$	$[{\textstyle{1 \over 2}}(c_{11}^{} + c_{12}^{}) + c_{66}^{}]$		$[p_{31}^2 /C]$
$[(1,1,0)/\sqrt 2 ]$	$[{\textstyle{1 \over 2}}(c_{11}^{} + c_{12}^{}) + c_{66}^{}]$	$[(1, - 1,0)/\sqrt 2 ]$	$[(p_{11}^{} + p_{12}^{} - 2p_{66}^{})_{}^2 /4C]$