Structure and thermal expansion of KGe2(PO4)3
| Autor: | D. Louër, M. Louër, M. Alqaraoui, R. Brochu, M. Alami |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Chemistry
Mechanical Engineering Isotropy Structure (category theory) Analytical chemistry Mineralogy Crystal structure Condensed Matter Physics Sodium phosphates Thermal expansion chemistry.chemical_compound Mechanics of Materials X-ray crystallography General Materials Science Powder diffraction Bar (unit) |
| Zdroj: | Materials Research Bulletin. 32:113-122 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/s0025-5408(96)00161-4 |
| Popis: | KGe{sub 2}(Po{sub 4}){sub 3} has been prepared in both crystalline and vitreous forms. The NZP-type structure of the crystalline variety and its thermal expansion have been investigated by X-ray powder diffraction. The crystal structure has been refined by the Rietveld method in the space group R{bar 3}. The thermal expansion coefficients have been determined between room temperature and 600 C and compared to dilatometry measurements. The parameters a and c have a positive and isotropic behavior and the average macroscopic thermal expansion coefficient, , is 10 {times} 10{sup {minus}6} C{sup {minus}1} at 600 C. A comparison with the thermal expansion of the related Li and Na compounds is reported. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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