Synthesis and structural study of a self-organized MnTiO3-TiO2 eutectic

Katarzyna Kołodziejak , Marcin Gajc , Jarosław Sar , Ryszard Diduszko , Krzysztof Rożniatowski , Dorota A Pawlak

Abstract

A 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 [010] orientation in which a 2-fold axis is present, while the oval precipitates grow in the [001] 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.
Author Katarzyna Kołodziejak
Katarzyna Kołodziejak,,
-
, Marcin Gajc ZIP
Marcin Gajc,,
- Division of Surface Engineering
, Jarosław Sar - Institute of Electronic Materials Technology (ITME)
Jarosław Sar,,
-
, Ryszard Diduszko IMiO
Ryszard Diduszko,,
- The Institute of Microelectronics and Optoelectronics
, Krzysztof Rożniatowski ZPM
Krzysztof Rożniatowski,,
- Division of Materials Design
, Dorota A Pawlak
Dorota A Pawlak,,
-
Journal seriesJournal of Alloys and Compounds, ISSN 0925-8388
Issue year2016
Vol659
NoFeb 25
Pages152-158
Publication size in sheets0.5
Keywords in EnglishMetoda pulling-down, Monokryształy, Ni-Ysz , Wzrost, Mikrostruktura, Krzepnięcie, Metamateriały, Stabilność / Pulling-Down Method; Single-Crystals; Ni-Ysz; Growth; Microstructure; Solidification; Metamaterials; Stability;
DOIDOI:10.1016/j.jallcom.2015.11.010
URL http://www.sciencedirect.com/science/article/pii/S0925838815315668
Languageen angielski
Score (nominal)35
ScoreMinisterial score = 35.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 3.133 (2) - 2016=2.919 (5)
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