REE Aluminate Perovskites Crystal Chemistry and Structural Principles

CaTiOs is brown when doped with chromium, with the most intense color, CIE a 11 and b 10, for 0.03 apfu this coloration turns into pink or magenta (e.g., a 14 and b 1) when the calcium titanate is apphed in glazes [3]. This behavior is attributed to the occurrence of chromium mostly as Cr [2,3]. 

The Mn-doped YInOs perovskite develops an intense blue hue that is comparable to industrial cobalt pigments, although it is free of yellow overtint [19]. The best color corresponds to the YIno,9Mno,i03 composition, which was proposed for high-performance applications, due to the very high cost of precursors (particularly indium oxide). 

Crystal Structure of Ideal and Distorted Ternary ABO3 Perovskites 

The ideal cubic perovskite structure can be considered as a derivative of the ReOs structure and is represented, according to the so-called B-cell setting, with the A cations (12-fold coordination) at the body centers, the B cations (6-fold coordination) at the cube corners, and the oxygens in the middle of the cube 

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Y, REE) Aluminate Perovskites Crystal Chemistry and Structural Principles 263... 

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