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

Figure 6.10 · Thesis 3 · Iturbe 2012

Figure 6.10 · Thesis 3 · Iturbe 2012

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Features of the $A$-site cation coordination polyhedra ( $A \mathrm{O}_{8}$) for $\operatorname{Sr} L n M R u \mathrm{O}_{6}(M=\mathrm{Zn}, \mathrm{Mg}, \mathrm{Ni})$ perovskites. Evolution of (a) the first coordination-sphere's mean $A$-O bond-lengths, (b) longest first coordination-sphere ( $A \mathrm{O}_{8}$) bond-length and shortest second coordination-sphere bond-length, (c) second coordination-sphere's mean $A$-O bond-lengths, and (d) longest $A$-O and shortest $A-B$ bond-lengths, as a function of temperature. Black-rectangle, red-triangle, and purple-rhombus stand for zinc, magnesium and nickel compounds, respectively. In (b) bond-lengths for the trigonal phase for Ni- and Mgcompounds are not indicated. Structural phase transition temperatures are indicate by dotted red and purple lines for magnesium and nickel compounds, respectively.

Features of the A-site cation coordination polyhedra ( A \mathrm{O}_{8}) for \operatorname{Sr} L n M R u \mathrm{O}_{6}(M=\mathrm{Zn}, \mathrm{Mg}, \mathrm{Ni}) perovskites. Evolution of (a) the first coordination-sphere’s mean A-O bond-lengths, (b) longest first coordination-sphere ( A \mathrm{O}_{8}) bond-length and shortest second coordination-sphere bond-length, (c) second coordination-sphere’s mean A-O bond-lengths, and (d) longest A-O and shortest A-B bond-lengths, as a function of temperature. Black-rectangle, red-triangle, and purple-rhombus stand for zinc, magnesium and nickel compounds, respectively. In (b) bond-lengths for the trigonal phase for Ni- and Mgcompounds are not indicated. Structural phase transition temperatures are indicate by dotted red and purple lines for magnesium and nickel compounds, respectively.

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Thesis 3 · Iturbe 2012
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