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Baek W, Gromilov SA, Kuklin AV, Kovaleva EA, Fedorov AS, Sukhikh AS, Hanfland M, Pomogaev VA, Melchakova IA, Avramov PV, Yusenko KV. Unique Nanomechanical Properties of Diamond-Lonsdaleite Biphases: Combined Experimental and Theoretical Consideration of Popigai Impact Diamonds. NANO LETTERS 2019; 19:1570-1576. [PMID: 30735045 DOI: 10.1021/acs.nanolett.8b04421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
For the first time, lonsdaleite-rich impact diamonds from one of the largest Popigai impact crater (Northern Siberia) with a high concentration of structural defects are investigated under hydrostatic compression up to 25 GPa. It is found that, depending on the nature of a sample, the bulk modulus for lonsdaleite experimentally obtained by X-ray diffraction in diamond-anvil cells is systematically lower and equal to 93.3-100.5% of the average values of the bulk moduli of a diamond matrix. Density functional theory calculations reveal possible coexistence of a number of diamond/lonsdaleite and twin diamond biphases. Among the different mutual configurations, separate inclusions of one lonsdaleite (001) plane per four diamond (111) demonstrate the lowest energy per carbon atom, suggesting a favorable formation of single-layer lonsdaleite (001) fragments inserted in the diamond matrix. Calculated formation energies and experimental diamond (311) and lonsdaleite (331) powder X-ray diffraction patterns indicate that all biphases could be formed under high-temperature, high-pressure conditions. Following the equation of states, the bulk modulus of the diamond (111)/lonsdaleite (001) biphase is the largest one among all bulk moduli, including pristine diamond and lonsdaleite.
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Affiliation(s)
- Woohyeon Baek
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , 80 Daehak-ro , Buk-gu, Daegu , 41566 , South Korea
| | - Sergey A Gromilov
- Department of Physics , Novosibirsk State University , Pirogova str. 2 , Novosibirsk 630090 , Russia
- Department of Crystal Chemistry , Nikolaev Institute of Inorganic Chemistry SB RAS , Lavrentiev ave. 3 , Novosibirsk 630090 , Russia
| | - Artem V Kuklin
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , 80 Daehak-ro , Buk-gu, Daegu , 41566 , South Korea
- Siberian Federal University , 79 Svobodniy pr. , Krasnoyarsk 660041 , Russia
| | - Evgenia A Kovaleva
- Siberian Federal University , 79 Svobodniy pr. , Krasnoyarsk 660041 , Russia
| | - Alexandr S Fedorov
- Siberian Federal University , 79 Svobodniy pr. , Krasnoyarsk 660041 , Russia
- Kirensky Institute of Physics , Federal Research Center KSC SB RAS , Krasnoyarsk 660036 , Russia
| | - Alexander S Sukhikh
- Department of Physics , Novosibirsk State University , Pirogova str. 2 , Novosibirsk 630090 , Russia
- Department of Crystal Chemistry , Nikolaev Institute of Inorganic Chemistry SB RAS , Lavrentiev ave. 3 , Novosibirsk 630090 , Russia
| | - Michael Hanfland
- ESRF-The European Synchrotron , 71 Avenue des Martyrs , Grenoble 38000 , France
| | - Vladimir A Pomogaev
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , 80 Daehak-ro , Buk-gu, Daegu , 41566 , South Korea
- Tomsk State University , 36 Lenin Prospekt , Tomsk 634050 , Russia
| | - Iuliia A Melchakova
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , 80 Daehak-ro , Buk-gu, Daegu , 41566 , South Korea
- Siberian Federal University , 79 Svobodniy pr. , Krasnoyarsk 660041 , Russia
| | - Paul V Avramov
- Department of Chemistry and Green-Nano Materials Research Center , Kyungpook National University , 80 Daehak-ro , Buk-gu, Daegu , 41566 , South Korea
| | - Kirill V Yusenko
- BAM Federal Institute of Materials Research and Testing , Richard-Willstätter Str. 11 , Berlin D-12489 , Germany
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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. NATURE MATERIALS 2018; 17:243-248. [PMID: 29467504 DOI: 10.1038/s41563-018-0024-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 01/17/2018] [Indexed: 06/08/2023]
Abstract
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.
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Affiliation(s)
- E J Olivier
- Centre for HRTEM, Physics Department, Nelson Mandela University, Port Elizabeth, South Africa.
| | - J H Neethling
- Centre for HRTEM, Physics Department, Nelson Mandela University, Port Elizabeth, South Africa
| | - R E Kroon
- Department of Physics, University of the Free State, Bloemfontein, South Africa
| | - S R Naidoo
- Materials Physics Research Institute, DST-NRF Centre of Excellence in Strong Materials (CoE-SM), School of Physics, University of the Witwatersrand, Johannesburg, South Africa
| | - C S Allen
- Electron Physical Science Imaging Center, Diamond Light Source Ltd, Didcot, Oxfordshire, UK
- Department of Materials, University of Oxford, Oxford, UK
| | - H Sawada
- Electron Physical Science Imaging Center, Diamond Light Source Ltd, Didcot, Oxfordshire, UK
- Department of Materials, University of Oxford, Oxford, UK
- JEOL UK Ltd, Welwyn Garden City, UK
| | - P A van Aken
- Stuttgart Center for Electron Microscopy, Max Planck Institute for Solid State Research, Stuttgart, Germany
| | - A I Kirkland
- Electron Physical Science Imaging Center, Diamond Light Source Ltd, Didcot, Oxfordshire, UK
- Department of Materials, University of Oxford, Oxford, UK
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