Abstract
A MnTiO3–TiO2 eutectic composite grown by the micro-pulling down method was studied by Raman spectroscopy. The Raman investigation confirmed that this eutectic consists of the three-dimensional network of TiO2 elongated precipitates interconnected by thin TiO2 lamellas embedded in a MnTiO3 matrix. Raman scattering spectra revealed that the TiO2 phase crystallizes in the rutile structure and the MnTiO3 matrix in the ilmenite structure. The thin lamella regions combine both the TiO2 and MnTiO3 phases. Two Raman lines at 116 cm−1 and 136 cm−1 not observed in a perfect ilmenite single crystal but observed for the eutectic MnTiO3 phase can be used to derive information about deviations in the MnTiO3 structure.
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