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http://hdl.handle.net/11375/19316
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DC Field | Value | Language |
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dc.contributor.advisor | Barbier, Jacques | - |
dc.contributor.author | Liu, Bo | - |
dc.date.accessioned | 2016-05-18T18:03:58Z | - |
dc.date.available | 2016-05-18T18:03:58Z | - |
dc.date.issued | 1992-05 | - |
dc.identifier.uri | http://hdl.handle.net/11375/19316 | - |
dc.description.abstract | <p> A number of silicate compounds BaTSiO4 (T = Co, Mg, Zn), Na0.5K0.5GaSiO4 and Sr1-xCaxBeSiO4 (x = 0.0 ~ 0.4) have been characterized by a combination of diffraction techniques. These compounds crystallize with the same (√3XA, C) superstructure of the hexagonal kalsilite (KAlSiO4) structure and belong to the large structural family of stuffed tridymite-derivatives. Their crystal structures have been refined by using powder neutron data (BaTSiO4, T = Mg, Zn), powder X-ray data (Na0.5K0.5 GaSiO4) and single crystal X-ray data (BaCoSiO4 and Sr1-xCaxBeSiO4, x = 0.0 and 0.27). This study shows that these kalsilite-like structures can accommodate cavity and tetrahedral atoms of variable sizes by relatively minor framework distortions and atomic displacements. The formation of the (√3XA, C) superstructure can be correlated with the relative sizes of the tetrahedral and cavity atoms.</p> | en_US |
dc.language.iso | en_US | en_US |
dc.subject | structures, silicates, compounds, diffraction, single, crystal, atoms | en_US |
dc.title | Structures of the Kalsilite-Like Silicates MTSiO4 (M = Ba, Na/K, Ca/Sr; T = Co, Mg, Zn, Ga, Be) | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | None | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Science (MSc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Liu_Bo_1992May_Masters..pdf | 4.93 MB | Adobe PDF | View/Open |
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