Structural Modulations in Monoclinic Tricalcium Silicate Solid Solutions Doped with Zinc Oxide, M(I), M(II), and M(III) |
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Authors: | Kazuyori Urabe Hiromi Nakano Hiroyasu Morita |
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Affiliation: | Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan |
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Abstract: | Structural modulations in solid solutions of C3S doped with various amounts of ZnO were investigated via the selected-area electron diffraction method. Three monoclinic modifications (M(I), M(II), and M(III)) were identified in the solid solutions. The modifications had pseudohexagonal subcells that were modulated to form supercells. Coordinates of the reflections attributable to the supercells could be expressed by the following linear combinations of vectors of the reciprocal lattices: m1(?2 a */5.4 + 2 b */5.4 ? 7 c */5.4) for M(I), m2(? a */5 + b */5 ? c *) for M(II), and m3(? a */6 + b */6 + 7 c */6) for M(III), m1 and m2=±1 and ±2, and m3=±1, ±2, and ± 3. All the monoclinic modifications possessed structural modulations of a one-dimensional type. The modulation waves could be detected as wavy contrasts by high-resolution transmission electron microscopy. |
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Keywords: | calcium silicate zinc oxide structure |
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