Table 3.1.3.2

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

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International Tables for Crystallography (2006). Vol. D. ch. 3.1, p. 358

V. Janovec^b ^* and V. Kopský^e

Table 3.1.3.2 | top | pdf |
Symmetry descents $[G\Downarrow F_1]$ associated with two irreducible representations

G	$[\Gamma_{\eta}]$		Proper or improper		Domain states			Full or partial
G	$[\Gamma_{\eta}]$		Ferroelectric	Ferroelastic				Ferroelectric	Ferroelastic
432		$[2_{xy}]$	proper	improper	12	12	12	full	full
		$[2_{xy}]$	improper	proper	12	12	12	full	full
		1	improper	improper	24	24	24	full	full
		1	proper	proper	24	24	24	full	full
$[\bar{4}3m]$		$[m_{xy}]$	improper	improper	12	12	12	full	full
		$[m_{xy}]$	proper	proper	12	12	12	full	full
		1	improper	improper	24	24	24	full	full
		1	proper	proper	24	24	24	full	full
$[m\bar3m]$	$[ T_{1g}]$	$[2_{xy}/m_{xy}]$	non	improper	12	0	12	non	full
	$[ T_{2g} ]$	$[2_{xy}/m_{xy}]$	non	proper	12	0	12	non	full
	$[ T_{1g} ]$	$[\bar1]$	non	improper	24	0	24	non	full
	$[ T_{2g} ]$	$[\bar1]$	non	proper	24	0	24	non	full
	$[ T_{1u} ]$	$[m_{x\bar y}2_{xy}m_z]$	proper	improper	12	12	6	full	partial
	$[ T_{2u} ]$	$[m_{x\bar y}2_{xy}m_z]$	improper	improper	12	12	6	full	partial
	$[ T_{1u} ]$	$[m_{z}]$	proper	improper	24	24	12	full	partial
	$[ T_{2u} ]$	$[m_{z}]$	improper	improper	24	24	12	full	partial
	$[ T_{1u} ]$	1	proper	improper	48	48	24	full	partial
	$[ T_{2u} ]$	1	improper	improper	48	48	24	full	partial