Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond
Diamond is a material that shows great promise for particle detection applications. However, under irradiation with energetic particles, many thermally stable defects are created, made up of lattice vacancies, self-interstitials, and complexes with impurities. Relatively distant Frenkel (vacancy-sel...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2007
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| _version_ | 1797051339288608768 |
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| author | Goss, J Rayson, M Briddon, P Baker, M |
| author_facet | Goss, J Rayson, M Briddon, P Baker, M |
| author_sort | Goss, J |
| collection | OXFORD |
| description | Diamond is a material that shows great promise for particle detection applications. However, under irradiation with energetic particles, many thermally stable defects are created, made up of lattice vacancies, self-interstitials, and complexes with impurities. Relatively distant Frenkel (vacancy-self-interstitial) pairs have long been used to explain optical and magnetic spectra in irradiated material. However, in diamond we show, using first-principles methods, that the ability of carbon to form s p2 -, s p3 -, and π -bonding configurations leads to particularly strong reconstructions between vacancy-self-interstitial pairs within a few atomic spacings of each other. The resultant complexes are anticipated to be optically and paramagnetically active, and we propose correlation of negatively charged Frenkel pairs with the W11-W14 paramagnetic centers, where substitutional nitrogen donors act as source of electrons and are not an intimate component part of the paramagnetic defects. © 2007 The American Physical Society. |
| first_indexed | 2024-03-06T18:18:06Z |
| format | Journal article |
| id | oxford-uuid:05522000-e069-41f6-8fba-37e0dfd87a15 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:18:06Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:05522000-e069-41f6-8fba-37e0dfd87a152022-03-26T08:56:32ZMetastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamondJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:05522000-e069-41f6-8fba-37e0dfd87a15EnglishSymplectic Elements at Oxford2007Goss, JRayson, MBriddon, PBaker, MDiamond is a material that shows great promise for particle detection applications. However, under irradiation with energetic particles, many thermally stable defects are created, made up of lattice vacancies, self-interstitials, and complexes with impurities. Relatively distant Frenkel (vacancy-self-interstitial) pairs have long been used to explain optical and magnetic spectra in irradiated material. However, in diamond we show, using first-principles methods, that the ability of carbon to form s p2 -, s p3 -, and π -bonding configurations leads to particularly strong reconstructions between vacancy-self-interstitial pairs within a few atomic spacings of each other. The resultant complexes are anticipated to be optically and paramagnetically active, and we propose correlation of negatively charged Frenkel pairs with the W11-W14 paramagnetic centers, where substitutional nitrogen donors act as source of electrons and are not an intimate component part of the paramagnetic defects. © 2007 The American Physical Society. |
| spellingShingle | Goss, J Rayson, M Briddon, P Baker, M Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond |
| title | Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond |
| title_full | Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond |
| title_fullStr | Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond |
| title_full_unstemmed | Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond |
| title_short | Metastable Frenkel pairs and the W11-W14 electron paramagnetic resonance centers in diamond |
| title_sort | metastable frenkel pairs and the w11 w14 electron paramagnetic resonance centers in diamond |
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