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- Short Range Order Evolution in the Preparation of SnO2 Based Materials
- Universidade Estadual Paulista (UNESP)
- Bat. 209D
- Lab. PCM
- The evolution of Eu3+ doped SnO2 xerogels to the cassiterite structure observed during sintering was studied by means of Eu3+ spectroscopy, XRD and EXAFS at the Sn K-edge. Eu3+ ions adsorbed at the surface of colloidal particles present a broad distribution of sites, typical of oxide glasses. With sintering at 300°C, this distribution is still broadened. Crystallization is clearly observed by the three techniques with increasing sintering temperature. It is found that the addition of Eu3+ limits the crystallite growth.
- Journal of Sol-Gel Science and Technology, v. 8, n. 1-3, p. 261-268, 1997.
- Eu3+ spectroscopy
- SnO2 xerogel
- Composition effects
- Crystal growth
- Doping (additives)
- Particles (particulate matter)
- Spectroscopic analysis
- Thermal effects
- Tin compounds
- X ray diffraction analysis
- Extended X ray absorption fine structures (EXAFS)
- Acesso restrito
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