Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies
For this study, 21 samples of colorless octahedral diamonds (weighing 5.4–55.0 mg) from the Mir pipe (Yakutia) were investigated with photoluminescence (PL), infrared (IR), and electron paramagnetic resonance (EPR) spectroscopies. Based on the IR data, three groups of diamonds belonging to types IIa...
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ftmdpi:oai:mdpi.com:/2073-4352/11/4/366/ 2023-08-20T04:10:20+02:00 Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies Mariana I. Rakhmanova Andrey Yu. Komarovskikh Yuri N. Palyanov Alexander A. Kalinin Olga P. Yuryeva Vladimir A. Nadolinny 2021-03-31 application/pdf https://doi.org/10.3390/cryst11040366 EN eng Multidisciplinary Digital Publishing Institute Inorganic Crystalline Materials https://dx.doi.org/10.3390/cryst11040366 https://creativecommons.org/licenses/by/4.0/ Crystals; Volume 11; Issue 4; Pages: 366 natural diamonds luminescence electron paramagnetic resonance infrared absorption annealing Text 2021 ftmdpi https://doi.org/10.3390/cryst11040366 2023-08-01T01:24:05Z For this study, 21 samples of colorless octahedral diamonds (weighing 5.4–55.0 mg) from the Mir pipe (Yakutia) were investigated with photoluminescence (PL), infrared (IR), and electron paramagnetic resonance (EPR) spectroscopies. Based on the IR data, three groups of diamonds belonging to types IIa, IaAB, and IaB were selected and their spectroscopic features were analyzed in detail. The three categories of stones exhibited different characteristic PL systems. The type IaB diamonds demonstrated dominating nitrogen–nickel complexes S2, S3, and 523 nm, while they were less intensive or even absent in the type IaAB crystals. The type IIa diamonds showed a double peak at 417.4 + 418.7 nm (the 418 center in this study), which is assumed to be a nickel–boron defect. In the crystals analyzed, no matter which type, 490.7, 563.5, 613, and 676.3 nm systems of various intensity could be detected; moreover, N3, H3, and H4 centers were very common. The step-by-step annealing experiments were performed in the temperature range of 600–1700 °C. The treatment at 600 °C resulted in the 563.5 nm system’s disappearance; the interstitial carbon vacancy annihilation could be considered as a reason. The 676.5 nm and 613 nm defects annealed out at 1500 °C and 1700 °C, respectively. Furthermore, as a result of annealing at 1500 °C, the 558.5 and 576 nm centers characteristic of superdeep diamonds from São Luis (Brazil) appeared. These transformations could be explained by nitrogen diffusion or interaction with the dislocations and/or vacancies produced. Text Yakutia MDPI Open Access Publishing Crystals 11 4 366 |
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natural diamonds luminescence electron paramagnetic resonance infrared absorption annealing |
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natural diamonds luminescence electron paramagnetic resonance infrared absorption annealing Mariana I. Rakhmanova Andrey Yu. Komarovskikh Yuri N. Palyanov Alexander A. Kalinin Olga P. Yuryeva Vladimir A. Nadolinny Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies |
topic_facet |
natural diamonds luminescence electron paramagnetic resonance infrared absorption annealing |
description |
For this study, 21 samples of colorless octahedral diamonds (weighing 5.4–55.0 mg) from the Mir pipe (Yakutia) were investigated with photoluminescence (PL), infrared (IR), and electron paramagnetic resonance (EPR) spectroscopies. Based on the IR data, three groups of diamonds belonging to types IIa, IaAB, and IaB were selected and their spectroscopic features were analyzed in detail. The three categories of stones exhibited different characteristic PL systems. The type IaB diamonds demonstrated dominating nitrogen–nickel complexes S2, S3, and 523 nm, while they were less intensive or even absent in the type IaAB crystals. The type IIa diamonds showed a double peak at 417.4 + 418.7 nm (the 418 center in this study), which is assumed to be a nickel–boron defect. In the crystals analyzed, no matter which type, 490.7, 563.5, 613, and 676.3 nm systems of various intensity could be detected; moreover, N3, H3, and H4 centers were very common. The step-by-step annealing experiments were performed in the temperature range of 600–1700 °C. The treatment at 600 °C resulted in the 563.5 nm system’s disappearance; the interstitial carbon vacancy annihilation could be considered as a reason. The 676.5 nm and 613 nm defects annealed out at 1500 °C and 1700 °C, respectively. Furthermore, as a result of annealing at 1500 °C, the 558.5 and 576 nm centers characteristic of superdeep diamonds from São Luis (Brazil) appeared. These transformations could be explained by nitrogen diffusion or interaction with the dislocations and/or vacancies produced. |
format |
Text |
author |
Mariana I. Rakhmanova Andrey Yu. Komarovskikh Yuri N. Palyanov Alexander A. Kalinin Olga P. Yuryeva Vladimir A. Nadolinny |
author_facet |
Mariana I. Rakhmanova Andrey Yu. Komarovskikh Yuri N. Palyanov Alexander A. Kalinin Olga P. Yuryeva Vladimir A. Nadolinny |
author_sort |
Mariana I. Rakhmanova |
title |
Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies |
title_short |
Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies |
title_full |
Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies |
title_fullStr |
Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies |
title_full_unstemmed |
Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies |
title_sort |
diamonds from the mir pipe (yakutia): spectroscopic features and annealing studies |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/cryst11040366 |
genre |
Yakutia |
genre_facet |
Yakutia |
op_source |
Crystals; Volume 11; Issue 4; Pages: 366 |
op_relation |
Inorganic Crystalline Materials https://dx.doi.org/10.3390/cryst11040366 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/cryst11040366 |
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Crystals |
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366 |
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