Preferentially orientated precipitation in MnTiO3 single crystals |
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Authors: | H Takei |
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Affiliation: | (1) The Research Institute for Iron, Steel and Other Metals, Tohoku University, 980 Sendai, Japan |
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Abstract: | Preferentially orientated precipitation of -TiO2 (rutile) needles in single crystals of MnTiO3 grown by a floating-zone method under a controlled atmosphere of oxygen fugacity was studied. Optical microscopy and X-ray analysis revealed that the orientation relation between the -TiO2 precipitates and the MnTiO2 matrix is: {000 1}MnTiO3// {111}-TiO2 and 11¯20MnTiO3// 110-TiO2. The precipitation phenomenon was explained by introducing a nucleation and growth mechanism which was experimentally supported by heat treating experiments. |
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