Phase transformation behavior of zinc metastannates obtained by aqueous precipitation at different temperatures
| Autor: | Ashraf T. Al-Hinai, Muna H. Al-Hinai, Joydeep Dutta |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Aqueous solution Annealing (metallurgy) Mechanical Engineering Metallurgy Spinel Analytical chemistry chemistry.chemical_element Zinc engineering.material Amorphous solid Spontaneous polarization chemistry Mechanics of Materials engineering General Materials Science Porosity Ilmenite |
| Zdroj: | Journal of Materials Science. 49:7282-7289 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-014-8437-3 |
| Popis: | Phase transformation studies in ZnO–SnO2 system from zinc metastannate (ZnSnO3) to zinc orthostannate (Zn2SnO4) with annealing temperature are reported. Non-centrosymmetric oxides show unique symmetry dependent and spontaneous polarization properties, which are technologically important. ZnSnO3 particles were synthesized by a simple aqueous synthesis at low temperatures designed with the assistance of potential–pH diagrams. ZnSnO3 particles synthesized at 4 °C are more porous losing the ilmenite structure upon annealing at 200 °C, while the other samples prepared at higher temperatures (25–65 °C) becomes amorphous at 300 °C. The phase transformation into the inverse spinel orthostannate phase occurs around 750 °C in all the samples. |
| Databáze: | OpenAIRE |
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