Large diamonds grown at high pressure conditions

Kanda, H.

doi:10.1590/s0103-97332000000300003

Cited by 37 publications

(31 citation statements)

References 38 publications

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“…Adapted from Ahmadi et al, 2018b. Doi et al, 2016; the wavelength, intensity, and duty cycle of optical illumination (Manson and Harrison, 2005;Aslam et al, 2013;Doi et al, 2016;Ji and Dutt, 2016); the application of a bias voltage (Grotz et al, 2012;Kato et al, 2013;Schreyvogel et al, 2014); and, for near-surface NVs, the diamond surface termination (Santori et al, 2009;Fu et al, 2010;Rondin et al, 2010;Hauf et al, 2011;Cui and Hu, 2013;Chu et al, 2014;Groot-Berning et al, 2014;Osterkamp et al, 2015;Newell, Dowdell, and Santamore, 2016;Kageura et al, 2017;Yamano et al, 2017). The charge-state efficiency is likely affected by the conditions of diamond growth, as well as the irradiation dose (Mita, 1996) (see Sec.…”

Section: B Nv Charge-state Efficiencymentioning

confidence: 99%

“…For example, phosphorus (Groot-Berning et al, 2014;Doi et al, 2016;Murai et al, 2018), with a donor level 0.6 eV below the conduction band (Katagiri et al, 2004), is a shallower donor than nitrogen, which lies 1.7 eV below the conduction band (Farrer, 1969;Wort and Balmer, 2008). However, creating n-doped diamond through the introduction of phosphorus has proven difficult (Kalish, 1999), as phosphorus doping is correlated with the introduction of a deep acceptor tentatively identified as the phosphorus vacancy (PV) (Jones, Lowther, and Goss, 1996). Moreover, irradiation and annealing to create NV centers may further convert desirable substitutional phosphorus into PVs (Jones, Lowther, and Goss, 1996).…”

Section: Nonoptical Effects On Nv Charge-state Efficiencymentioning

confidence: 99%

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Sensitivity optimization for NV-diamond magnetometry

et al. 2020

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Solid-state spin systems including nitrogen-vacancy (NV) centers in diamond constitute an increasingly favored quantum sensing platform. However, present NV ensemble devices exhibit sensitivities orders of magnitude away from theoretical limits. The sensitivity shortfall both handicaps existing implementations and curtails the envisioned application space. This review analyzes present and proposed approaches to enhance the sensitivity of broadband ensemble-NV-diamond magnetometers. Improvements to the spin dephasing time, the readout fidelity, and the host diamond material properties are identified as the most promising avenues and are investigated extensively. This analysis of sensitivity optimization establishes a foundation to stimulate development of new techniques for enhancing solid-state sensor performance.

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Section: B Nv Charge-state Efficiencymentioning

confidence: 99%

Section: Nonoptical Effects On Nv Charge-state Efficiencymentioning

confidence: 99%

Sensitivity optimization for NV-diamond magnetometry

et al. 2020

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“…The content of inherent nitrogen remaining in the carbonyl nickel powders medium is higher than that of the FeNi sheet catalyst. Additionally, the nitrogen solubility of Ni is minimum compared with the Fe and Co elements [27]. Those may lead to the presence of nitrogen pairs in the carbonyl nickel powders-C system.…”

Section: Nitrogen Impurity Concentration Of Typical Crystalsmentioning

confidence: 98%

The characteristics of diamond crystallized from carbonyl nickel powders at high pressure and high temperature conditions

Jia

et al. 2012

Journal of Crystal Growth

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“…This system is rather complicated due to the formation of intermediate phases -carbides. Therefore, in order to carry out the synthesis and growth of diamonds, it is necessary to overcome the reaction temperatures of the formation of carbides, despite the relatively low temperature of the eutectic (Kanda, 2000). Usually, nickel or cobalt is added to the growth system to suppress the crystallization of carbides and to reduce the melting point of the metal solvent.…”

Section: Introductionmentioning

confidence: 99%

Formation of two crystal modifications of Fe₇C_3−x at 5.5 GPa

et al. 2019

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The Fe–C system, which is widely used to grow commercial high‐pressure–high‐temperature diamond monocrystals, is rather complicated due to the formation of carbides. The carbide Fe3C is a normal run product, but the pressure at which Fe7C3 carbide becomes stable is a subject of discussion. This paper demonstrates the synthesis of Fe7C3 carbide and its detailed study using single‐crystal and powder X‐ray diffraction, as well as electron probe micro‐analysis and scanning electron microscopy. The experiments were performed using a multiple‐anvil high‐pressure apparatus of `split‐sphere' (BARS) type at a pressure of 5.5 GPa and a temperature of 1623 K. Our results show that in the Fe–C system, in addition to diamond, a phase that corresponds to the Fe7C3 carbide was synthesized. This means that both carbides (Fe7C3 and Fe3C) are stable at 5.5 GPa. Two crystal phases are described, Fe14C6 and Fe28C12−x. Fe14C6 is based on the well known rhombic structure of Fe7C3, while Fe28C12−x has a different packing order of Fe6C polyhedrons. The results obtained in this study should be taken into account when synthesizing and growing diamond at high pressures and temperatures in metal–carbon systems with a high iron content, as well as when conducting experimental studies on the synthesis of diamond directly from carbide.

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Large diamonds grown at high pressure conditions

Cited by 37 publications

References 38 publications

Sensitivity optimization for NV-diamond magnetometry

Sensitivity optimization for NV-diamond magnetometry

The characteristics of diamond crystallized from carbonyl nickel powders at high pressure and high temperature conditions

Formation of two crystal modifications of Fe₇C_3−x at 5.5 GPa

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Large diamonds grown at high pressure conditions

Cited by 37 publications

References 38 publications

Sensitivity optimization for NV-diamond magnetometry

Sensitivity optimization for NV-diamond magnetometry

The characteristics of diamond crystallized from carbonyl nickel powders at high pressure and high temperature conditions

Formation of two crystal modifications of Fe7C3−x at 5.5 GPa

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Formation of two crystal modifications of Fe₇C_3−x at 5.5 GPa