Raman scattering on ZnO nanocrystals
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedad Mexicana de Física A.C.
2007
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| _version_ | 1876424937303965696 |
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| author | J. Marquina |
| author_facet | J. Marquina |
| contents | Raman scattering on ZnO nanocrystals J. Marquina Ch. Power J. González Física, Astronomía y Matemáticas II II ZnO ZnO Nanocrystals We present here a novel and simple physical method for obtaining ZnO nanocrystals using the pressure cycle method and the membrane diamond anvil cell (MDAC) up to 13 GPa at 500 K. The recovered nanocrystals in the wurtzite phase (w–ZnO) were characterized by high resolution Raman scattering and XRD studies. Single crystal of the w–ZnO was used in this work. The high–pressure cell was a membrane DAC specifically designed for high–temperature studies. The Raman spectra of high quality ZnO single crystal and nanocrystals were compared, and we observed both the softening and the asymmetric broadening of Raman peaks, which are in good agreement with the effect of relaxation of the q–vector selection rule due to quantum size confinement effect. The experimental results confirms the existence of ZnO nanocrystals in the wurtzite phase with a diameter of the order of 17 nm. 2007 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57036163040 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.7 Vol.53 |
| format | Artículo científico |
| id | redalyc_57036163040 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Raman scattering on ZnO nanocrystals J. Marquina Física, Astronomía y Matemáticas II II ZnO ZnO Nanocrystals Raman scattering on ZnO nanocrystals J. Marquina Ch. Power J. González Física, Astronomía y Matemáticas II II ZnO ZnO Nanocrystals We present here a novel and simple physical method for obtaining ZnO nanocrystals using the pressure cycle method and the membrane diamond anvil cell (MDAC) up to 13 GPa at 500 K. The recovered nanocrystals in the wurtzite phase (w–ZnO) were characterized by high resolution Raman scattering and XRD studies. Single crystal of the w–ZnO was used in this work. The high–pressure cell was a membrane DAC specifically designed for high–temperature studies. The Raman spectra of high quality ZnO single crystal and nanocrystals were compared, and we observed both the softening and the asymmetric broadening of Raman peaks, which are in good agreement with the effect of relaxation of the q–vector selection rule due to quantum size confinement effect. The experimental results confirms the existence of ZnO nanocrystals in the wurtzite phase with a diameter of the order of 17 nm. 2007 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57036163040 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.7 Vol.53 |
| title | Raman scattering on ZnO nanocrystals |
| topic | Física, Astronomía y Matemáticas II II ZnO ZnO Nanocrystals |
| url | https://www.redalyc.org/articulo.oa?id=57036163040 |