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

Figure 5.10 · Thesis 4 · Orayech 2015

Figure 5.10 · Thesis 4 · Orayech 2015

status thesis-only · visibility public · id plt:thesis-04.5.10

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Thermal evolution of the lattice parameters of $\mathrm{Na}_{0.5} \mathrm{K}_{0.5} \mathrm{NbO}_{3}$, as obtained from XRPD and NPD measurements. Solid circles up 300 K, were obtained in the low-temperature NPD measurement and solid circles, from 300 to 875 K in the high-temperature XRPD measurement. The solid red points correspond to the long acquisition data at $2,10,175$ and 300 K temperatures. From 2 to 875 K the compound undergoes tree phase transitions with the following sequence: $R 3 c \rightarrow A m m 2 \rightarrow P 4 m m \rightarrow P m \overline{3} m$.

Thermal evolution of the lattice parameters of \mathrm{Na}_{0.5} \mathrm{K}_{0.5} \mathrm{NbO}_{3}, as obtained from XRPD and NPD measurements. Solid circles up 300 K, were obtained in the low-temperature NPD measurement and solid circles, from 300 to 875 K in the high-temperature XRPD measurement. The solid red points correspond to the long acquisition data at 2,10,175 and 300 K temperatures. From 2 to 875 K the compound undergoes tree phase transitions with the following sequence: R 3 c \rightarrow A m m 2 \rightarrow P 4 m m \rightarrow P m \overline{3} m.

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Thesis 4 · Orayech 2015
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