research papers
This paper presents an electron microscopy study of reduced calcium titanate crystals (CaTi2O4) and the growth mechanism of titanium monoxide TiOx on a CaTi2O4 surface. Large high-quality CaTi2O4 crystals were prepared using the molten salt flux method. The crystallographic directions and the growth direction of the CaTi2O4 crystalline needles were confirmed by electron backscatter diffraction and Kikuchi pattern analysis. The low-angle grain boundaries in CaTi2O4 and the crystallographic orientation relationship between CaTi2O4 and TiOx were investigated using high-resolution transmission electron microscopy. It is found that both the low-angle boundaries and the amorphous area may play a key role during the growth process of titanium monoxide TiOx. The results presented here contribute to a better understanding of the detailed growth mechanism of TiOx on a CaTi2O4 surface.
Keywords: electron microscopy; crystal growth mechanisms; low-angle grain boundaries; crystallographic orientation relationships; TiOx.
Supporting information
Portable Document Format (PDF) file https://doi.org/10.1107/S1600576715020348/nb5153sup1.pdf |