Imaging the atomic structure and local chemistry of platelets in natural type Ia diamond
In the past decades, many efforts have been devoted to characterizing {001} platelet defects in type Ia diamond. It is known that N is concentrated at the defect core. However, an accurate description of the atomic structure of the defect and the role that N plays in it is still unknown. Here, by us...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Journal article |
| Izdano: |
Springer Nature
2018
|
| _version_ | 1826266718077452288 |
|---|---|
| author | Olivier, EJ Neethling, JH Kroon, RE Naidoo, SR Allen, CS Sawada, H van Aken, PA Kirkland, AI |
| author_facet | Olivier, EJ Neethling, JH Kroon, RE Naidoo, SR Allen, CS Sawada, H van Aken, PA Kirkland, AI |
| author_sort | Olivier, EJ |
| collection | OXFORD |
| description | In the past decades, many efforts have been devoted to characterizing {001} platelet defects in type Ia diamond. It is known that N is concentrated at the defect core. However, an accurate description of the atomic structure of the defect and the role that N plays in it is still unknown. Here, by using aberration-corrected transmission electron microscopy and electron energy-loss spectroscopy we have determined the atomic arrangement within platelet defects in a natural type Ia diamond and matched it to a prevalent theoretical model. The platelet has an anisotropic atomic structure with a zigzag ordering of defect pairs along the defect line. The electron energy-loss near-edge fine structure of both carbon K- and nitrogen K-edges obtained from the platelet core is consistent with a trigonal bonding arrangement at interstitial sites. The experimental observations support an interstitial aggregate mode of formation for platelet defects in natural diamond. |
| first_indexed | 2024-03-06T20:43:13Z |
| format | Journal article |
| id | oxford-uuid:34f4ad2b-8f33-4bcd-ab6a-5b3faf0d6ed2 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:43:13Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:34f4ad2b-8f33-4bcd-ab6a-5b3faf0d6ed22022-03-26T13:29:17ZImaging the atomic structure and local chemistry of platelets in natural type Ia diamondJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:34f4ad2b-8f33-4bcd-ab6a-5b3faf0d6ed2Symplectic Elements at OxfordSpringer Nature2018Olivier, EJNeethling, JHKroon, RENaidoo, SRAllen, CSSawada, Hvan Aken, PAKirkland, AIIn the past decades, many efforts have been devoted to characterizing {001} platelet defects in type Ia diamond. It is known that N is concentrated at the defect core. However, an accurate description of the atomic structure of the defect and the role that N plays in it is still unknown. Here, by using aberration-corrected transmission electron microscopy and electron energy-loss spectroscopy we have determined the atomic arrangement within platelet defects in a natural type Ia diamond and matched it to a prevalent theoretical model. The platelet has an anisotropic atomic structure with a zigzag ordering of defect pairs along the defect line. The electron energy-loss near-edge fine structure of both carbon K- and nitrogen K-edges obtained from the platelet core is consistent with a trigonal bonding arrangement at interstitial sites. The experimental observations support an interstitial aggregate mode of formation for platelet defects in natural diamond. |
| spellingShingle | Olivier, EJ Neethling, JH Kroon, RE Naidoo, SR Allen, CS Sawada, H van Aken, PA Kirkland, AI Imaging the atomic structure and local chemistry of platelets in natural type Ia diamond |
| title | Imaging the atomic structure and local chemistry of platelets in natural type Ia diamond |
| title_full | Imaging the atomic structure and local chemistry of platelets in natural type Ia diamond |
| title_fullStr | Imaging the atomic structure and local chemistry of platelets in natural type Ia diamond |
| title_full_unstemmed | Imaging the atomic structure and local chemistry of platelets in natural type Ia diamond |
| title_short | Imaging the atomic structure and local chemistry of platelets in natural type Ia diamond |
| title_sort | imaging the atomic structure and local chemistry of platelets in natural type ia diamond |
| work_keys_str_mv | AT olivierej imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond AT neethlingjh imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond AT kroonre imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond AT naidoosr imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond AT allencs imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond AT sawadah imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond AT vanakenpa imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond AT kirklandai imagingtheatomicstructureandlocalchemistryofplateletsinnaturaltypeiadiamond |