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http://hdl.handle.net/11375/18564
Title: | Crystal Structures and Phase Transformations of Sodium Pyrophosphate and Sodium Diarsenate |
Authors: | Leung, Kiang Yiu |
Advisor: | Calvo, Crispin |
Department: | Physics |
Keywords: | crystal, structures, phase, transformations, sodium |
Publication Date: | May-1973 |
Abstract: | <p> An X-ray study of the various phases of anhydrous sodium pyrophosphate has been carried out. The system began with an ordered structure in orthorhombic space group P212121 and ended with a completely disordered structure in hexagonal space group P63/mmc, All the intermediate phases were partially disordered.</p> <p> The crystal structure of the first two phases of the system were determined while the rest were only partially solved due to the complexity of the disorder involved. A discussion on the symmetry aspects of the phase transformations was given and a model for the disorder of the hexagonal phase was proposed.</p> <p> As an integral part of the study the room-temperature phase of sodium diarsenate was also investigated.</p> |
URI: | http://hdl.handle.net/11375/18564 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Leung_Kiang_Y._1973May_Ph.D..pdf | 7.61 MB | Adobe PDF | View/Open |
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