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

Figure 8 · Thesis 2 · Faik 2009

Figure 8 · Thesis 2 · Faik 2009

status thesis-only · visibility public · id plt:thesis-02.8

Open in its own tab ↗
shows the evolution with temperature of the lattice parameters of $\mathrm{Sr}_{2} \mathrm{CoSbO}_{6}$. In this figure we have represented the unit cell in the rhombohedral description ( $a=b=c, \alpha=\beta=\gamma$), instead of the hexagonal one ( $a=b, \gamma=120^{\circ}$). This representation is more convenient for observing the disappearance of the trigonal distortion. As it can be observed in Fig. 8, the rhombohedral angle $\alpha$ decreases continuously with the temperature, and at $\approx 470 \mathrm{K}$ it becomes equal to 60 deg, the value at which the cubic symmetry is attained.

shows the evolution with temperature of the lattice parameters of \mathrm{Sr}_{2} \mathrm{CoSbO}_{6}. In this figure we have represented the unit cell in the rhombohedral description ( a=b=c, \alpha=\beta=\gamma), instead of the hexagonal one ( a=b, \gamma=120^{\circ}). This representation is more convenient for observing the disappearance of the trigonal distortion. As it can be observed in Fig. 8, the rhombohedral angle \alpha decreases continuously with the temperature, and at \approx 470 \mathrm{K} it becomes equal to 60 deg, the value at which the cubic symmetry is attained.

Document
Thesis 2 · Faik 2009
Figure
8
Kind
cell-vs-t
Rights
own
Reproduce
not-needed

auto-cropped from the OCR Markdown crop box (stage B); materials and kind to be reviewed in Phase 1

Evidence