Synthesis and structural study of a self-organized MnTiO3-TiO2 eutectic
Katarzyna Kołodziejak , Marcin Gajc , Jarosław Sar , Ryszard Diduszko , Krzysztof Rożniatowski , Dorota A Pawlak
AbstractA microstructured manganese titanate - titanium dioxide, MnTiO3-TiO2, hybrid eutectic has been grown by the micro-pulling-down method from a TiO2 57 mol.% - MnO 43 mol.% composition. X-ray powder diffraction verifies that two phases have been formed: rhombohedral MnTiO3 and tetragonal TiO2. The TiO2 phase forms a three-dimensional network of micron-scale oval precipitates interconnected with c.a. 0.5 mu m in thickness lamellas and the MnTiO3 is the matrix phase. The two TiO2 precipitate types grow in different crystallographic orientations, which results in this complex geometry made of faceted and non-faceted inclusions. The lamellas grow in the  orientation in which a 2-fold axis is present, while the oval precipitates grow in the  orientation in which the 4-fold screw axis is present. A qualitative and quantitative analysis of the eutectic microstructure is presented. The MnTiO3-TiO(2)composite is interesting due to its potential application in photoelectrochemistry.
|Journal series||Journal of Alloys and Compounds, ISSN 0925-8388|
|Publication size in sheets||0.5|
|Keywords in English||Metoda pulling-down, Monokryształy, Ni-Ysz , Wzrost, Mikrostruktura, Krzepnięcie, Metamateriały, Stabilność / Pulling-Down Method; Single-Crystals; Ni-Ysz; Growth; Microstructure; Solidification; Metamaterials; Stability;|
|ASJC Classification||; ; ;|
|Score|| = 35.0, 10-06-2020, ArticleFromJournal|
= 35.0, 10-06-2020, ArticleFromJournal
|Publication indicators||= 5; = 6; : 2016 = 1.332; : 2016 = 3.133 (2) - 2016=2.919 (5)|
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