EEL calculations and measurements of graphite and graphitic-CNx core-losses
Core EEL spectra of MWCNTs (multi-wall carbon nanotubes) grown in a nitrogen atmosphere were acquired utilising a dedicated STEM equipped with a Gatan Enfina system. Splitting of the carbon K-edge pi* resonance into two peaks provided evidence of two non-degenerate carbon bonding states. In order to...
| Main Authors: | , , , , , |
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| Formato: | Conference item |
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2006
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| _version_ | 1826259377687887872 |
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| author | Seepujak, A Bangert, U Harvey, A Blank, V Kulnitskiy, B Batov, D |
| author_facet | Seepujak, A Bangert, U Harvey, A Blank, V Kulnitskiy, B Batov, D |
| author_sort | Seepujak, A |
| collection | OXFORD |
| description | Core EEL spectra of MWCNTs (multi-wall carbon nanotubes) grown in a nitrogen atmosphere were acquired utilising a dedicated STEM equipped with a Gatan Enfina system. Splitting of the carbon K-edge pi* resonance into two peaks provided evidence of two non-degenerate carbon bonding states. In order to confirm the presence of a CNx bonding state, a full-potential linearised augmented plane-wave method was utilised to simulate core EEL spectra of graphite and graphitic-CNx. compounds. The simulations confirmed splitting of the carbon K-edge pi* resonance in graphitic-CNx materials, with the pristine graphite pi* resonance remaining unsplit. The simulations also confirmed the increasing degree of amorphicity with higher concentrations (25%) of substitutional nitrogen in graphite. |
| first_indexed | 2024-03-06T18:48:54Z |
| format | Conference item |
| id | oxford-uuid:0f7fa51e-e229-4de5-9053-c717f9bda07a |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:48:54Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:0f7fa51e-e229-4de5-9053-c717f9bda07a2022-03-26T09:51:30ZEEL calculations and measurements of graphite and graphitic-CNx core-lossesConference itemhttp://purl.org/coar/resource_type/c_5794uuid:0f7fa51e-e229-4de5-9053-c717f9bda07aSymplectic Elements at Oxford2006Seepujak, ABangert, UHarvey, ABlank, VKulnitskiy, BBatov, DCore EEL spectra of MWCNTs (multi-wall carbon nanotubes) grown in a nitrogen atmosphere were acquired utilising a dedicated STEM equipped with a Gatan Enfina system. Splitting of the carbon K-edge pi* resonance into two peaks provided evidence of two non-degenerate carbon bonding states. In order to confirm the presence of a CNx bonding state, a full-potential linearised augmented plane-wave method was utilised to simulate core EEL spectra of graphite and graphitic-CNx. compounds. The simulations confirmed splitting of the carbon K-edge pi* resonance in graphitic-CNx materials, with the pristine graphite pi* resonance remaining unsplit. The simulations also confirmed the increasing degree of amorphicity with higher concentrations (25%) of substitutional nitrogen in graphite. |
| spellingShingle | Seepujak, A Bangert, U Harvey, A Blank, V Kulnitskiy, B Batov, D EEL calculations and measurements of graphite and graphitic-CNx core-losses |
| title | EEL calculations and measurements of graphite and graphitic-CNx core-losses |
| title_full | EEL calculations and measurements of graphite and graphitic-CNx core-losses |
| title_fullStr | EEL calculations and measurements of graphite and graphitic-CNx core-losses |
| title_full_unstemmed | EEL calculations and measurements of graphite and graphitic-CNx core-losses |
| title_short | EEL calculations and measurements of graphite and graphitic-CNx core-losses |
| title_sort | eel calculations and measurements of graphite and graphitic cnx core losses |
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