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https://apo.ansto.gov.au/dspace/handle/10238/8977| Title: | Soft chemical synthesis and structural characterization of Y2HfxTi2−xO7 |
| Authors: | Kong, L Shang, Z de los Reyes, M Lumpkin, GR Triani, G Aughterson, RD Karatchevtseva, I |
| Keywords: | X-ray diffraction Ceramics Pyrochlore Raman spectroscopy Diffraction Order-disorder transformations |
| Issue Date: | 4-May-2015 |
| Publisher: | Elsevier |
| Citation: | Kong, L., Zhang, Z., de los Reyes, M., Karatchevtseva, I., Lumpkin, G. R., Triani, G., & Aughterson, R. D. (2015). Soft chemical synthesis and structural characterization of Y2HfxTi2−xO7. Ceramics International, 41(4), 5309-5317. doi:10.1016/j.ceramint.2014.12.074 |
| Series/Report no.: | 0272-8842; |
| Abstract: | A novel soft chemistry route was developed to synthesize Y2HfxTi2−xO7 (0≤x≤2.0) oxide solid solution. An aqueous solution containing reactants was produced to ensure the combustion reaction taking place at the molecular level. A suite of characterization techniques, including X-ray diffraction, Raman, transmission electron spectroscopy, as well as X-ray absorption near edge structure (XANES), is employed to investigate the structural and phase changes of the series. Both X-ray and electron diffraction patterns show that the Y2HfxTi2−xO7 system undergoes a clear composition-induced phase transition from ordered pyrochlore to disordered defect-fluorite at x~1.5. On the other hand, Raman and XANES spectra reveal a gradual evolution of the local structure with the substitution of Hf for Ti. © 2014 Elsevier Ltd and Techna Group S.r.l. |
| Gov't Doc #: | 9105 |
| URI: | https://doi.org/10.1016/j.ceramint.2014.12.074 http://apo.ansto.gov.au/dspace/handle/10238/8977 |
| Appears in Collections: | Journal Articles |
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