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

Figure 6.7 · Thesis 3 · Iturbe 2012

Figure 6.7 · Thesis 3 · Iturbe 2012

status thesis-only · visibility public · id plt:thesis-03.6.7

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shows the temperature dependence of the laboratory X-ray diffraction profile projections around the ( $111;-111$) monoclinic primitive reflections ( $2 \theta=24^{\circ}-26^{\circ}$) and (642) cubic reflection $\left(2 \theta=92^{\circ}-96^{\circ}\right)$. The reflections shift to lower $2 \theta$ positions due to thermal expansion. At low temperatures the monoclinic primitive reflection is clearly seen and disappears at higher temperatures, indicating a phase transition to a non-primitive space group. All compounds undergo a temperature induced structural phase transition taking place at $\approx 1225,1050,950$ and $1025 \mathrm{K}, \mathrm{SrPrMRuO}_{6}(\mathrm{M}=\mathrm{Zn}, \mathrm{Co}, \mathrm{Mg}, \mathrm{Ni})$ respectively. The XRPD experiment was not enough good to determine the new phases' symmetry.

shows the temperature dependence of the laboratory X-ray diffraction profile projections around the ( 111;-111) monoclinic primitive reflections ( 2 \theta=24^{\circ}-26^{\circ}) and (642) cubic reflection \left(2 \theta=92^{\circ}-96^{\circ}\right). The reflections shift to lower 2 \theta positions due to thermal expansion. At low temperatures the monoclinic primitive reflection is clearly seen and disappears at higher temperatures, indicating a phase transition to a non-primitive space group. All compounds undergo a temperature induced structural phase transition taking place at \approx 1225,1050,950 and 1025 \mathrm{K}, \mathrm{SrPrMRuO}_{6}(\mathrm{M}=\mathrm{Zn}, \mathrm{Co}, \mathrm{Mg}, \mathrm{Ni}) respectively. The XRPD experiment was not enough good to determine the new phases’ symmetry.

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Thesis 3 · Iturbe 2012
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auto-cropped from the OCR Markdown crop box (stage B); materials and kind to be reviewed in Phase 1

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