Plates · structure-drawing

Crystal structures, octahedra, tilt schemes and cell relations. 41 plates.

Figure 1.1 · structure-drawing · Thesis 1 · Gateshki 2003Representación esquemática de la estructura perovskita $\mathrm{ABX}_{3}$. La estructura está formada por octaedros $\mathrm{BX}_{6}$ interc… Figure 1.3 · structure-drawing · Thesis 1 · Gateshki 2003Representación esquemática de la estructura perovskita ordenada $\mathrm{A}_{2} \mathrm{BB}^{\prime} \mathrm{X}_{6}$ (a). Teóricamente se ha… Figure 2.2 · structure-drawing · Thesis 1 · Gateshki 2003Posibles modificaciones de las estructuras de las perovskitas dobles, debidas a inclinaciones de los octaedros. Para cada modificación se mu… Figure 3.7 · structure-drawing · Thesis 1 · Gateshki 2003Modelos de la estructura perovskita doble con los grupos espaciales $I 4 / m$ (a) y $I 4 / m m m$ (b). En la estructura en (a), las unidades… Figure 3.9 · structure-drawing · Thesis 1 · Gateshki 2003El refinamiento de la estructura de $\mathrm{Sr}_{2} \mathrm{ZnWO}_{6}$ en el grupo espacial $P 2_{1} / n$ puede explicar la forma de los pi… Figure 3.10 · structure-drawing · Thesis 1 · Gateshki 2003Representación esquemática de la estructura de $\mathrm{Sr}_{2} \mathrm{ZnWO}_{6}$ en la fase monoclínica. El sistema de inclinaciones que c… Figure 3.12 · structure-drawing · Thesis 1 · Gateshki 2003Variación con la temperatura de los parámetros de red de $\mathrm{Sr}_{2} \mathrm{ZnWO}_{6}$. La estructura de este compuesto a altas temper… Figure 3.20 · structure-drawing · Thesis 1 · Gateshki 2003El refinamiento de la estructura de $\mathrm{Sr}_{2} \mathrm{CaWO}_{6}$ con el grupo espacial $P 2_{1} / n$ puede explicar la forma de los p… Figure 3.32 · structure-drawing · Thesis 1 · Gateshki 2003Cambio con la temperatura de la intensidad de la reflexión (222); (o) datos experimentales, (-) guía para el ojo. Esta reflexión, con intens… Figure 3.34 · structure-drawing · Thesis 1 · Gateshki 2003Cambios con la temperatura de las intensidades de varias líneas de difracción en las medidas de difracción de neutrones. Los puntos sólidos… Figure 3.36 · structure-drawing · Thesis 1 · Gateshki 2003Ángulo de rotación de los octaedros $\mathrm{WO}_{6}$ refinado de los datos de difracción de neutrones a diferentes temperaturas. Las barras… Figure 3.37 · structure-drawing · Thesis 1 · Gateshki 2003Intensidades calculadas de varias líneas de difracción de neutrones como función del ángulo de rotación de los octaedros $\mathrm{WO}_{6}$.… Figure 5.2 · structure-drawing · Thesis 1 · Gateshki 2003Detalle del perfil de difracción de rayos X de laboratorio refinado con los grupos espaciales $P 2_{1} / n$ (a) y $P b n m$ (b). El modelo e… Figure 1.2 · structure-drawing · Thesis 2 · Faik 2009Representación esquemática de la estructura de la perovskita doble $\mathrm{A}_{2} \mathrm{BB}^{\prime} \mathrm{X}_{6}$: (a) completamente o… Figure 1.2-2 · structure-drawing · Thesis 2 · Faik 2009Representación esquemática de la estructura de la perovskita doble $\mathrm{A}_{2} \mathrm{BB}^{\prime} \mathrm{X}_{6}$: (a) completamente o… Figure 5 · structure-drawing · Thesis 2 · Faik 2009presents the projection of the room-temperature crystal structures of $\mathrm{Sr}_{2} \mathrm{ScSbO}_{6}$ and $\mathrm{Ca}_{2} \mathrm{ScSbO}_{6}$… Figure 5-2 · structure-drawing · Thesis 2 · Faik 2009presents the projection of the room-temperature crystal structures of $\mathrm{Sr}_{2} \mathrm{ScSbO}_{6}$ and $\mathrm{Ca}_{2} \mathrm{ScSbO}_{6}$… Figure 9.3 · structure-drawing · Thesis 2 · Faik 2009Raman spectra of $\mathrm{Sr}_{2} \mathrm{AlSbO}_{6}$ (sample 1) at different temperatures (excitation 514.5 nm). No significant changes are… Figure 9.3-2 · structure-drawing · Thesis 2 · Faik 2009Raman spectra of $\mathrm{Sr}_{2} \mathrm{AlSbO}_{6}$ (sample 1) at different temperatures (excitation 514.5 nm). No significant changes are… Figure 9.3-3 · structure-drawing · Thesis 2 · Faik 2009Raman spectra of $\mathrm{Sr}_{2} \mathrm{AlSbO}_{6}$ (sample 1) at different temperatures (excitation 514.5 nm). No significant changes are… Figure 1.1 · structure-drawing · Thesis 3 · Iturbe 2012The schematic representation of the $A B O_{3}$ ideal perovskite structure, where the green, grey and red spheres represent, $A, B$ and oxyg… Figure 1.2 · structure-drawing · Thesis 3 · Iturbe 2012The schematic representation of the $A A^{\prime} B B^{\prime} \mathrm{O}_{6}$ ideal double perovskite structure; where $B$ cation and $B \mathrm{O}_{6}$… Figure 1.4 · structure-drawing · Thesis 3 · Iturbe 2012Types of ordering in perovskites with two different $B$-site cations. (a) Ideal rock-salt ordering; (b) partial rock-salt ordering with loca… Figure 1.5 · structure-drawing · Thesis 3 · Iturbe 2012Simulated X -ray diffraction patterns for ordered $\left(A A^{\prime}\right) B B^{\prime} \mathrm{O}_{6}$ cubic structure (space group $F m \overline{3} m$… Figure 1.6 · structure-drawing · Thesis 3 · Iturbe 2012The coordination-polyhedron of $A$-site cation of the $A B \mathrm{O}_{3}$ perovskite; (a) ideal 12-fold coordination (cubo-octahedron), (b)… Figure 1.7 · structure-drawing · Thesis 3 · Iturbe 2012Simulated X -ray diffraction patterns for disordered $\left(A A^{\prime}\right)\left(B B^{\prime}\right) \mathrm{O}_{6}$ cubic structure (bl… Figure 1.8 · structure-drawing · Thesis 3 · Iturbe 2012Simulated X-ray diffraction patterns for ordered $\left(A A^{\prime}\right) B B^{\prime} \mathrm{O}_{6}$ cubic structure (black) and the mos… Figure 5.8 · structure-drawing · Thesis 3 · Iturbe 2012Projection along the cubic (simple) perovskite $[001]_{p}$ and $[110]_{p}$ directions, of a section of the unit cell of the double perovskit… Figure 6.3 · structure-drawing · Thesis 3 · Iturbe 2012Graphical representation of (a) and (c) ideal, and (b) and (d) distorted $\mathrm{Sr} / \mathrm{PrO}_{12}$ cubooctahedral configuration (hig… Figure 8.4 · structure-drawing · Thesis 3 · Iturbe 2012Possible magnetic model of the final refined $\left(3 \Gamma 1_{2 a} \oplus 3 \Gamma 2_{2 b} \oplus 3 \Gamma 1_{4 e}\right)$ magnetic struct… Figure 9.4 · structure-drawing · Thesis 3 · Iturbe 2012Schematic representation of the five irrep distortions allowed in the Pbnm configuration, corresponding to $\mathrm{M}_{2}^{+}, \mathrm{M}_{3}^{+}, \mathrm{R}_{4}^{+}, \mathrm{R}_{5}^{+}$… Figure 9.12 · structure-drawing · Thesis 3 · Iturbe 2012Magnetic structure models, a) $\mathrm{SrLaFeRuO}_{6}, 3 \Gamma_{5}$ solution; b) $\mathrm{SrNdFeRuO}_{6}, 3 \Gamma_{3}$ solution; and c) $\mathrm{SrPrFeRuO}_{6}, 3 \Gamma_{3} \oplus 1 \Gamma_{3}$… Figure 10.6 · structure-drawing · Thesis 3 · Iturbe 2012The coordination polyhedron for $\mathrm{Ca} / \mathrm{Ln}$ cations occupying the $A$-site of the $A B \mathrm{O}_{3}$ perovskite; (a) ideal… Figure 10.8 · structure-drawing · Thesis 3 · Iturbe 2012Extracts from the laboratory X-ray diffraction ( $\lambda_{\mathrm{K} \alpha 1}=1.5406 \AA$ and $\lambda_{\mathrm{K} \alpha 2}=1.5444 \AA$)… Figure 1.1 · structure-drawing · Thesis 4 · Orayech 2015The schematic representation of the cubic simple perovskite structure $A B O_{3}$. The $A$ and $B$ cations are shown as yellow and blue sphe… Figure 1.3 · structure-drawing · Thesis 4 · Orayech 2015Types of ordering in perovskites with two different $B$-site cations. (a) Ideal rock-salt ordering; (b) partial rock-salt ordering with loca… Figure 5.3 · structure-drawing · Thesis 4 · Orayech 2015To the left, chain of maximal sub-groups of $P m \overline{3} m$ space group down-to the experimentally observed room-temperature $A m m 2$… Figure 5.8 · structure-drawing · Thesis 4 · Orayech 2015To the left, chain of maximal sub-groups of $P m \overline{3} m$ parent phase space group down-to the experimentally observed low-temperatur… Figure 5.15 · structure-drawing · Thesis 4 · Orayech 2015Calculated SP (see the text for further details). Different colours represent the points of the SP resulting from the data of different sour… Figure 10.14 · structure-drawing · Thesis 4 · Orayech 2015Images in the real space and in the reciprocal space, showing clearly the Nano-Chessboard structure. Figure 10.15 · structure-drawing · Thesis 4 · Orayech 2015Theoretical models describing the Nano-Chessboards structure.