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http://hdl.handle.net/2445/24798| Title: | Effects of Nb doping on the TiO2 anatase-to-rutile phase transition |
| Author: | Arbiol i Cobos, Jordi Cerdà Belmonte, Judith Dezanneau, Guilhem Cirera Hernández, Albert Peiró Martínez, Francisca Cornet i Calveras, Albert Morante i Lleonart, Joan Ramon |
| Keywords: | Equacions d'estat Ciència dels materials Equations of state Materials science |
| Issue Date: | 15-Jul-2002 |
| Publisher: | American Institute of Physics |
| Abstract: | We study the influence of Nb doping on the TiO2 anatase-to-rutile phase transition, using combined transmission electron microscopy, Raman spectroscopy, x-ray diffraction and selected area electron diffraction analysis. This approach enabled anatase-to-rutile phase transition hindering to be clearly observed for low Nb-doped TiO2 samples. Moreover, there was clear grain growth inhibition in the samples containing Nb. The use of high resolution transmission electron microscopy with our samples provides an innovative perspective compared with previous research on this issue. Our analysis shows that niobium is segregated from the anatase structure before and during the phase transformation, leading to the formation of NbO nanoclusters on the surface of the TiO2 rutile nanoparticles. |
| Note: | Reproducció del document publicat a: http://dx.doi.org/10.1063/1.1487915 |
| It is part of: | Journal of Applied Physics, 2002, vol. 92, num. 2, p. 853- 861 |
| URI: | http://hdl.handle.net/2445/24798 |
| Related resource: | http://dx.doi.org/10.1063/1.1487915 |
| ISSN: | 0021-8979 |
| Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
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|---|---|---|---|---|
| 500512.pdf | 1.03 MB | Adobe PDF | View/Open |
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