Crystal Growth and Characterization of Diamond from Carbonyl Iron Catalyst under High Pressure and High Temperature Conditions

Liu, Xiaobing; Jia, Xiaopeng; Zhang, Zhuangfei; Li, Yong; Hu, Meihua; Zhou, Zhiyuan; Ma, Hongan

doi:10.1021/cg200387n

Cited by 52 publications

(24 citation statements)

References 36 publications

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“…Additionally, the presence of the diamond slices could be attributed to the simultaneous incorporation of the oxygen and nitrogen atoms into the diamond lattice structure. The result is very good agreement with the last report [11].…”

Section: Inclusions and Morphology Of The Synthesized Diamondsupporting

confidence: 93%

“…Recently, diamonds with special habits were synthesized using carbonyl iron powders as catalyst by film growth under high pressure and high temperature (HPHT) conditions and the synthesized crystals were 0.3-0.8 mm in size [11]. It is well known that temperature gradient growth (TGG) is an effective approach to get large size single diamonds.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Inclusions and Morphology Of The Synthesized Diamondsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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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“…The role of Fe catalyst in this approach is to enhance diamond nucleation as previously demonstrated by several studies. [82,83] These diamond nanowires are straight, thin, and long over tens of micrometers with a high crystallinity and structural uniformity ( Figure 2g,h). [77] Another main advantage of the bottom-up method based on the VLS process is in situ doping by incorporating desired dopant precursors in the synthesis procedure.…”

Section: Synthesis and Growth Of Bottom-up Nanowiresmentioning

confidence: 99%

Nanoarchitectonics for Wide Bandgap Semiconductor Nanowires: Toward the Next Generation of Nanoelectromechanical Systems for Environmental Monitoring

et al. 2020

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Semiconductor nanowires are widely considered as the building blocks that revolutionized many areas of nanosciences and nanotechnologies. The unique features in nanowires, including high electron transport, excellent mechanical robustness, large surface area, and capability to engineer their intrinsic properties, enable new classes of nanoelectromechanical systems (NEMS). Wide bandgap (WBG) semiconductors in the form of nanowires are a hot spot of research owing to the tremendous possibilities in NEMS, particularly for environmental monitoring and energy harvesting. This article presents a comprehensive overview of the recent progress on the growth, properties and applications of silicon carbide (SiC), group III‐nitrides, and diamond nanowires as the materials of choice for NEMS. It begins with a snapshot on material developments and fabrication technologies, covering both bottom‐up and top‐down approaches. A discussion on the mechanical, electrical, optical, and thermal properties is provided detailing the fundamental physics of WBG nanowires along with their potential for NEMS. A series of sensing and electronic devices particularly for environmental monitoring is reviewed, which further extend the capability in industrial applications. The article concludes with the merits and shortcomings of environmental monitoring applications based on these classes of nanowires, providing a roadmap for future development in this fast‐emerging research field.

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“…Nitrogen, which is an omnipresent impurity in synthetic and natural diamonds, has been shown to drastically influence diamond growth process and lead to significant changes in the real structure and properties of diamond crystals. 7 − 9 It has been shown that the addition of small amounts of H 2 O to the metal–carbon systems gives rise to the impurity adsorption effect on diamond growth and leads to the formation of specific antiskeletal crystals. 10 , 11 An increase in the H 2 O content in the growth system leads to a decrease in the nitrogen content in diamonds and the appearance of hydrocarbon inclusions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Oxygen on Diamond Crystallization in Metal–Carbon Systems

et al. 2020

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In this article, we report the influence of oxygen concentration in the transition-metal solvent-catalyst on the crystallization processes, morphology, and defect-and-impurity content of diamond crystals. In a series of experiments, the concentration of oxygen ( C O ) in the growth system was varied by adding Fe 2 O 3 to the charge, and the other parameters and conditions of the growth were constant: Ni 7 Fe 3 solvent-catalyst, P = 6.0 GPa, T = 1400 °C, and duration of 40 h. It is found that on increasing C O in the growth system from 0 to 10 wt %, the crystallization of diamond proceeds through the following stages: single crystal → block crystal → spontaneous crystals → aggregate of block crystals and twin crystals. At C O ≥ 5 wt %, diamond crystallizes jointly with wustite (FeO) and metastable graphite. The oxygen solubility in the iron–nickel melt is estimated at about 2 wt %. With increasing oxygen content in the system, the range of nitrogen concentrations in diamonds crystallized in one experiment significantly broadens with the maximum nitrogen concentrations being increased from 200−250 ppm in the experiment without O additives to 1100–1200 ppm in the experiment with 10 wt % O added. The established joint growth of diamond and wustite suggests possible crystallization of natural diamonds in the Fe–Ni–O–C system over a wide range of oxygen concentrations up to 10 wt %.

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Crystal Growth and Characterization of Diamond from Carbonyl Iron Catalyst under High Pressure and High Temperature Conditions

Abstract: Crystal Growth & Design ARTICLE diffusion on diamond crystallization and provides a lot of valuable information on the search for the genesis of natural diamond.

Cited by 52 publications

References 36 publications

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

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

Nanoarchitectonics for Wide Bandgap Semiconductor Nanowires: Toward the Next Generation of Nanoelectromechanical Systems for Environmental Monitoring

Effect of Oxygen on Diamond Crystallization in Metal–Carbon Systems

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