X-ray topo-tomography of large HPHT synthetic diamonds
- Autores: Zolotov D.A.1, Buzmakov A.V.1, Khokhryakov A.F.2, Borzdov Y.M.2, Yagudin L.D.3, Palyanov Y.N.2, Dyachkova I.G.1, Asadchikov V.E.1, Shiryaev A.A.3
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Afiliações:
- Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”
- Sobolev Institute of Geology and Mineralogy, SB RAS
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
- Edição: Volume 70, Nº 4 (2025)
- Páginas: 565-576
- Seção: REAL STRUCTURE OF CRYSTALS
- URL: https://bakhtiniada.ru/0023-4761/article/view/306264
- DOI: https://doi.org/10.31857/S0023476125040042
- EDN: https://elibrary.ru/jfnrdp
- ID: 306264
Citar
Resumo
Extended defects in large synthetic diamonds grown at high pressures and high temperatures (HPHT) using thermal gradient method were studied by X-ray topo-tomography with a laboratory setup. It is shown that temperature and growth rate are the principal factors influencing crystalline quality of the diamonds. Synthesis at high temperatures and low rate allows growth of single crystals with low density of dislocations, stacking faults and microtwin lamellae. Annihilation kinetics of the extended defects during annealing at high pressure implies important role of vacancies diffusion. The annihilation of such defects leads to formation of perfect dislocations.
Sobre autores
D. Zolotov
Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”
Email: a_shiryaev@mail.ru
Rússia, Moscow, 119333
A. Buzmakov
Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”
Email: a_shiryaev@mail.ru
Rússia, Moscow, 119333
A. Khokhryakov
Sobolev Institute of Geology and Mineralogy, SB RAS
Email: a_shiryaev@mail.ru
Novosibirsk
Y. Borzdov
Sobolev Institute of Geology and Mineralogy, SB RAS
Email: a_shiryaev@mail.ru
Rússia, Novosibirsk
L. Yagudin
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
Email: a_shiryaev@mail.ru
Rússia, Moscow
Y. Palyanov
Sobolev Institute of Geology and Mineralogy, SB RAS
Email: a_shiryaev@mail.ru
Rússia, Novosibirsk
I. Dyachkova
Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”
Email: a_shiryaev@mail.ru
Rússia, Moscow, 119333
V. Asadchikov
Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”
Email: a_shiryaev@mail.ru
Rússia, Moscow, 119333
A. Shiryaev
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
Autor responsável pela correspondência
Email: a_shiryaev@mail.ru
Rússia, Moscow
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