perovskite atlas Structures, modes and phase transitions · Josu M. Igartua · UPV/EHU

Table 1 · Iturbe‐Zabalo et al. 2012

Table 1 · Iturbe‐Zabalo et al. 2012

status published · visibility public · id tbl:10.1016-j.molstruc.2012.08.049.1


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Iturbe‐Zabalo et al. 2012
Table
1
Irrep Isotropy subgroup Dim Mode Amplitude
\mathrm{CaPr}_{2} \mathrm{CuTi}_{2} \mathrm{O}_{9} \mathrm{CaNd}_{2} \mathrm{CuTi}_{2} \mathrm{O}_{9} \mathrm{CaSm}_{2} \mathrm{CuTi}_{2} \mathrm{O}_{9}
XRPD NPD XRPD NPD XRPD
P m \overline{3} m \rightarrow P b n m
\mathrm{R}_{4}^{+} Imma (74) 1 A1 1.22(3) 1.20(1) 1.25(4) 1.26(1) 1.40(4)
\mathrm{R}_{5}^{+} Imma (74) 2 A2 0.04(3) 0.03(1) 0.06(4) 0.04(1) -0.04(4)
A3 -0.08(1) -0.06(1) -0.09(1) -0.03(1) -0.12(1)
\mathrm{X}_{5}^{+} Cmcm (63) 2 A4 0.21(2) 0.24(1) 0.22(3) 0.21(1) 0.36(3)
A5 0.50(1) 0.52(1) 0.51(1) 0.44(1) 0.61(1)
\mathrm{M}_{2}^{+} P4/mbm (127) 1 A6 0.09(3) 0.01(1) 0.08(4) 0.01(1) 0.07(4)
\mathrm{M}_{3}^{+} P4/mbm (127) 1 A7 0.94(3) 1.03(1) 0.95(4) 0.96(1) 1.09(4)
Direction: \mathrm{R}_{4}^{+}(0, a,-a), \mathrm{R}_{5}^{+}(0, a, a), \mathrm{X}_{5}^{+}(0,0, a, 0,0,0), \mathrm{M}_{2}^{+}(a, 0,0), \mathrm{M}_{3}^{+}(a, 0,0)
\mathrm{BaLa}_{2} \mathrm{CuTi}_{2} \mathrm{O}_{9} XRPD \mathrm{BaPr}_{2} \mathrm{CuTi}_{2} \mathrm{O}_{9} XRPD \mathrm{BaNd}_{2} \mathrm{CuTi}_{2} \mathrm{O}_{9} XRPD
P m \overline{3} m \rightarrow I 4 / m c m
\mathbf{R}_{4}^{+} I4/mcm (140) 1 A1 -0.27(6) -0.37(8) -0.35(9)
K -vector: \mathrm{R}_{4}^{+}(1 / 2,1 / 2,1 / 2); direction: \mathrm{R}_{4}^{+}(a, 0,0)

Evidence