Synthesis and characterization of Ti-doped ZrSiO4 at ambient and high-pressure conditions
| Autor: | Florencia Grinblat, L.G. Pampillo, Corina Mercedes Chanquia, Sergio Ferrari, Daniel Errandonea, F.D. Saccone, Vitaliy Bilovol |
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| Rok vydání: | 2018 |
| Předmět: |
Diffraction
Phase transition Materials science Analytical chemistry INGENIERÍAS Y TECNOLOGÍAS 02 engineering and technology 01 natural sciences symbols.namesake Tetragonal crystal system Ingeniería de los Materiales 0103 physical sciences General Materials Science 010306 general physics ZIRCON Bulk modulus Mechanical Engineering Doping Cerámicos 021001 nanoscience & nanotechnology HIGH PRESSURE Mechanics of Materials symbols Compressibility 0210 nano-technology Raman spectroscopy Stoichiometry |
| Zdroj: | Journal of Materials Science. 53:8817-8825 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-018-2170-2 |
| Popis: | We have successfully synthesized for the first time a Ti-doped ZrSiO4 powder (stoichiometry Zr0.95Ti0.05SiO4) via a sol–gel route. The structural and vibrational properties have been characterized by X-ray diffraction, electron microscopy and Raman spectroscopy. Zr0.95Ti0.05SiO4 has a tetragonal zircon-type structure with a = 6.5981(2) Å and c = 5.9810(2) Å. Eight of its Raman-active modes have been measured and assigned. We also performed high-pressure synchrotron X-ray diffraction experiments. The structural behavior was studied up to 31 GPa. At this pressure, we found evidence of the onset of a phase transition, coexisting the low-pressure polymorphs (zircon) with the typical high-pressure polymorph of ZrSiO4 (reidite-type). From the analysis of unit-cell volume versus pressure using a Birch–Murnaghan equation of state, in the quasi-hydrostatic pressure regime (P |
| Databáze: | OpenAIRE |
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