Search Results - "Palyanov, Yu.N."
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Reducing role of sulfides and diamond formation in the Earth's mantle
Published in Earth and planetary science letters (15-08-2007)“…Sulfides are abundant inclusions in diamond, but their role in the diamond genesis is still debatable. To address this issue, experimental modeling of natural…”
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The effect of HPHT treatment on the spectroscopic features of type IIb synthetic diamonds
Published in Diamond and related materials (01-07-2008)“…The effect of high pressure high temperature treatment on the spectroscopic features of boron-doped type IIb synthetic diamonds has been studied. Synthetic…”
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3
Investigation of the Y centers in cubic plastically deformed type Ib diamonds (Yakutia placers)
Published in Diamond and related materials (01-01-2025)Get full text
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Effect of HPHT annealing in a medium with high hydrogen fugacity on the properties of plastically deformed brown IaAB diamond
Published in Diamond and related materials (01-10-2023)“…To test the possibility of hydrogen diffusion into the dislocation core channels in plastically deformed type IaAB diamonds the diamond sample was annealed at…”
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New data on the N1 nitrogen paramagnetic center in brownish type IaAB diamonds from MIR pipe
Published in Diamond and related materials (01-12-2021)“…In this work, two brownish crystals from the Mir pipe attributed to type IaAB have been examined by a complex of spectroscopic methods: electron paramagnetic…”
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Multiscale characterization of 13C-enriched fine-grained graphitic materials for chemical and electrochemical applications
Published in Carbon (New York) (01-11-2017)“…13C-enriched fine-grained graphitic material has been studied towards its potential for chemical and electrochemical applications. The structural and…”
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Insight into effect of water additive on carbon remaining in metal alloys after high-pressure high-temperature diamond synthesis
Published in Diamond and related materials (01-11-2016)“…In this study, we attempted to unravel the physicochemical grounds of the effect of water additive on diamond crystallization from a conventional metal-carbon…”
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Carbon isotope fractionation during high pressure and high temperature crystallization of Fe–C melt
Published in Chemical geology (16-06-2015)“…There is a growing body of experimental evidence that iron carbides can play an important role in the mantle both as a host of carbon and as a redox couple…”
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Formation of the Fe, Mg-Silicates, [Fe.sup.0], and Graphite Assemblage as a Result of Cohenite Oxidation under Lithospheric Mantle Conditions
Published in Doklady earth sciences (01-03-2018)“…Experimental studies in the [Fe.sub.3]C-Si[O.sub.2]-MgO system (P = 6.3 GPa, T = 1100-1500[degrees]C, t = 20-40 h) have been carried out. It has been…”
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10
Effect of diamond growth rate on carbon isotope fractionation in Fe–Ni–C system
Published in Diamond and related materials (2012)“…The carbon isotope fractionation factor between diamond and carbon dissolved in the Fe–Ni metal melt varies from 4.1‰ down to 2.4‰ in HTHP crystallization…”
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Diamond and graphite crystallization from C–O–H fluids under high pressure and high temperature conditions
Published in Diamond and related materials (01-12-2001)“…Crystallization of diamond was studied in the CO 2–C, CO 2–H 2O–C, H 2O–C, and CH 4–H 2–C systems at 5.7 GPa and 1200–1420°C. Thermodynamic calculations show…”
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Sulfide melts–graphite interaction at HPHT conditions: Implications for diamond genesis
Published in Earth and planetary science letters (15-10-2006)“…The interaction of graphite with (Fe,Ni) 9S 8 and FeS sulfide melts has been studied at P = 6.3–7.5 GPa and T = 1450–2200 °C in experiments with a duration…”
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13
Conductive layers in diamond formed by hydrogen ion implantation and annealing
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-07-2012)“…High conductivity is extremely difficult to obtain in diamond due to its wide band gap and low solubility of dopands. The goal of the investigation was to form…”
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Stability of methane in reduced C–O–H fluid at 6.3 GPa and 1300–1400°C
Published in Doklady earth sciences (01-06-2017)“…The composition of a reduced C–O–H fluid was studied by the method of chromatography–mass spectrometry under the conditions of 6.3 GPa, 1300–1400°C, and f O 2…”
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Photoluminescence study of annealed nickel- and nitrogen-containing synthetic diamond
Published in Diamond and related materials (01-07-1999)“…The results of a photoluminescence (PL) study of synthetic diamonds showing different degrees of nickel–nitrogen complex transformation are presented. A number…”
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Incongruent melting of gallium nitride at 7.5 GPa
Published in Diamond and related materials (01-03-2007)“…Melting of GaN was studied at 7.5 GPa and 2300–2400 °C, using a split-sphere multi-anvil apparatus (BARS). Diamond synthesis from graphite in CaCO 3–C system…”
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Ranges of 10–350keV H and H2 ions in (111) diamond
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-09-2017)“…Understanding of the implantation process of the hydrogen ions into diamond is of great technological interest for the fabrication of the color centers…”
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Fabrication of graphitic layers in diamond using FIB implantation and high pressure high temperature annealing
Published in Diamond and related materials (01-03-2016)“…We have used high pressure high temperature annealing (HPHT) for graphitisation of implanted layers in diamond created by 30keV Ga+ focused ion beam. Electron…”
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Ranges of 10–350 keV H and H 2 ions in (1 1 1) diamond
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-09-2017)Get full text
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Conditions of phlogopite formation upon interaction of carbonate melts with peridotite of the subcratonic lithosphere
Published in Doklady earth sciences (01-06-2015)“…The geochemical data show that the stage of kim berlite magma generation was preceded by intrusion of carbonatite melts into the protolith. According to the…”
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