Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron Irradiation
The influence of fast neutron irradiation on the structure and spatial distribution of Ge nanocrystals (NC) embedded in an amorphous SiO2 matrix has been studied. The investigation was conducted by means of laser Raman Scattering (RS), High Resolution Transmission Electron Microscopy (HR-TEM) and X-...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2011-07-01
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| Series: | Nanomaterials and Nanotechnology |
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| Online Access: | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/structure_and_spatial_distribution_of_ge_nanocrystals_subjected_to_fast_neutron_irradiation |
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| author | Alexander N. Ionov Tiecheng Lu Yossi Gofer Judith Grinblat David H. Dressler Issai Shlimak Shai Levy |
| author_facet | Alexander N. Ionov Tiecheng Lu Yossi Gofer Judith Grinblat David H. Dressler Issai Shlimak Shai Levy |
| author_sort | Alexander N. Ionov |
| collection | DOAJ |
| description | The influence of fast neutron irradiation on the structure and spatial distribution of Ge nanocrystals (NC) embedded in an amorphous SiO2 matrix has been studied. The investigation was conducted by means of laser Raman Scattering (RS), High Resolution Transmission Electron Microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS). The irradiation of Ge- NC samples by a high dose of fast neutrons lead to a partial destruction of the nanocrystals. Full reconstruction of crystallinity was achieved after annealing the radiation damage at 8000C, which resulted in full restoration of the RS spectrum. HR-TEM images show, however, that the spatial distributions of Ge-NC changed as a result of irradiation and annealing. A sharp decrease in NC distribution towards the SiO2 surface has been observed. This was accompanied by XPS detection of Ge oxides and elemental Ge within both the surface and subsurface region. |
| format | Article |
| id | doaj-art-000ec79f889b4b739ac15856929b0d2e |
| institution | OA Journals |
| issn | 1847-9804 |
| language | English |
| publishDate | 2011-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Nanomaterials and Nanotechnology |
| spelling | doaj-art-000ec79f889b4b739ac15856929b0d2e2025-08-20T02:03:14ZengWileyNanomaterials and Nanotechnology1847-98042011-07-0111http://dx.doi.org/10.5772/50951Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron IrradiationAlexander N. IonovTiecheng LuYossi GoferJudith GrinblatDavid H. DresslerIssai ShlimakShai LevyThe influence of fast neutron irradiation on the structure and spatial distribution of Ge nanocrystals (NC) embedded in an amorphous SiO2 matrix has been studied. The investigation was conducted by means of laser Raman Scattering (RS), High Resolution Transmission Electron Microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS). The irradiation of Ge- NC samples by a high dose of fast neutrons lead to a partial destruction of the nanocrystals. Full reconstruction of crystallinity was achieved after annealing the radiation damage at 8000C, which resulted in full restoration of the RS spectrum. HR-TEM images show, however, that the spatial distributions of Ge-NC changed as a result of irradiation and annealing. A sharp decrease in NC distribution towards the SiO2 surface has been observed. This was accompanied by XPS detection of Ge oxides and elemental Ge within both the surface and subsurface region.http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/structure_and_spatial_distribution_of_ge_nanocrystals_subjected_to_fast_neutron_irradiation Ge nanocrystalsNeutron radiation effectsStructure and spatial distribution |
| spellingShingle | Alexander N. Ionov Tiecheng Lu Yossi Gofer Judith Grinblat David H. Dressler Issai Shlimak Shai Levy Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron Irradiation Nanomaterials and Nanotechnology Ge nanocrystals Neutron radiation effects Structure and spatial distribution |
| title | Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron Irradiation |
| title_full | Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron Irradiation |
| title_fullStr | Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron Irradiation |
| title_full_unstemmed | Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron Irradiation |
| title_short | Structure and Spatial Distribution of Ge Nanocrystals Subjected to Fast Neutron Irradiation |
| title_sort | structure and spatial distribution of ge nanocrystals subjected to fast neutron irradiation |
| topic | Ge nanocrystals Neutron radiation effects Structure and spatial distribution |
| url | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/structure_and_spatial_distribution_of_ge_nanocrystals_subjected_to_fast_neutron_irradiation |
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