Special Issue "Synthesis and Characterization of Diamond Crystals"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Materials".

Deadline for manuscript submissions: closed (30 June 2019).

Special Issue Editor

Guest Editor
Prof. Vladimir Blank

1 Technological Institute for Superhard and Novel Carbon Materials, 108840, Centralnaya Str. 7a, Troitsk, Moscow 108840, Russia
2 Department of Molecular and Chemical Physics, Moscow Institute of Physics and Technology StateUniversity, 141700, Institutskiy Per. 9, Dolgoprudny, Moscow 141700, Russia
Website | E-Mail
Interests: superhard materials; synthetic diamonds; HPHT and CVD methods; carbon phase diagram; high tech diamond products; characterization of diamond crystals, including X-ray and optic properties

Special Issue Information

Dear Colleagues,

The appearance of diamond crystal synthesis and the measurement of their structure and properties began in the middle of the 20th century, and has expanded considerably until the present, when synthetic diamonds are produced on an industrial scale. Synthetic diamonds have become widely used in key areas of modern industry (mining industry, machinery building, electronics, medicine, aerospace, and so on).

The development of this area led to the synthesis of high-purity, semiconductor and multilayer diamond crystals, which have no natural analogues. Possessing unique functional and operational properties, such diamonds are used in high-tech areas of industry and in fundamental scientific research—these two features are the main reasons for producing the current Special Issue.

This Special Issue on “Synthesis and Characterization of Diamond Crystals” will provide a unique international forum where scientists, engineers and practitioners in the field will be able to share their most recent, novel findings and understanding of basic principles, advanced techniques, and applications of synthetic diamonds.

The topics summarized in the keywords provide general examples of more subtopics. This volume is especially open for any innovative contributions related to the aspects of diamond growth and the study of their properties.

Prof. Vladimir Blank
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Synthetic diamond
  • Diamond growth
  • Diamond characterization
  • High-tech diamond application

Published Papers (2 papers)

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Research

Open AccessArticle
Simulation-Based Development of a New Cylindrical-Cavity Microwave-Plasma Reactor for Diamond-Film Synthesis
Crystals 2019, 9(6), 320; https://doi.org/10.3390/cryst9060320
Received: 17 May 2019 / Revised: 16 June 2019 / Accepted: 20 June 2019 / Published: 24 June 2019
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Abstract
A 2.45 GHz microwave-plasma chemical-vapor deposition (MPCVD) reactor was designed and built in-house by collaborating with Guangdong TrueOne Semiconductor Technology Co., Ltd. A cylindrical cavity was designed as the deposition chamber and a circumferential coaxial-mode transformer located at the top of the cavity [...] Read more.
A 2.45 GHz microwave-plasma chemical-vapor deposition (MPCVD) reactor was designed and built in-house by collaborating with Guangdong TrueOne Semiconductor Technology Co., Ltd. A cylindrical cavity was designed as the deposition chamber and a circumferential coaxial-mode transformer located at the top of the cavity was adopted as the antenna. Two quartz-ring windows that were placed far away from the plasma and cooled by water-cooling cavity walls were used to affix the antenna to the cavity and act as a vacuum seal for the reactor, respectively. This design improved the sealing and protected the quartz windows. In addition, a numerical simulation was proposed to predict the electric-field and plasma-density distributions in the cavity. Based on the simulation results, a microwave-plasma reactor with TM021 mode was built. The leak rate of this new reactor was tested to be as low as 1 × 10−8 Pa·m3·s−1, and the maximal microwave power was as high as 10 kW. Then, single-crystal diamond films were grown with the morphology and crystalline quality characterized by an optical microscope, atomic force microscope (AFM), Raman spectrometer, photoluminescence (PL) spectrometer, and high-resolution X-ray diffractometer. It was shown that the newly developed MPCVD reactor can produce diamond films with high quality and purity. Full article
(This article belongs to the Special Issue Synthesis and Characterization of Diamond Crystals)
Figures

Graphical abstract

Open AccessArticle
Single Crystal Diamond Deposited by Dual Radio-Frequency Plasma Jet CVD with High Growth Rate
Crystals 2019, 9(1), 32; https://doi.org/10.3390/cryst9010032
Received: 3 December 2018 / Revised: 24 December 2018 / Accepted: 6 January 2019 / Published: 10 January 2019
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Abstract
Single crystal diamonds were deposited on high pressure high temperature (HPHT) substrate with high growth rate, up to 18.5 μm/h, by using dual radio-frequency inductive coupled plasma jet. The methane flux was found to influence the growth rate of single crystal diamond. The [...] Read more.
Single crystal diamonds were deposited on high pressure high temperature (HPHT) substrate with high growth rate, up to 18.5 μm/h, by using dual radio-frequency inductive coupled plasma jet. The methane flux was found to influence the growth rate of single crystal diamond. The reason for this might be ascribed to the electron temperature increase, raising the flux of methane, based on the plasma diagnosis results by optical emission spectra (OES). The results of Raman spectroscopy and the X-ray rocking-curve indicated that as-deposited diamonds are of good quality. Full article
(This article belongs to the Special Issue Synthesis and Characterization of Diamond Crystals)
Figures

Figure 1

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