声冲击波诱导的 sp2 到 sp3 型相变--第二部分：从价带光谱和电子衍射图谱中发现金刚石的证据

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2024-10-20 DOI:10.1016/j.diamond.2024.111680

Sivakumar Aswathappa , S. Sahaya Jude Dhas , Raju Suresh Kumar

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引用次数: 0

摘要

在这里，我们介绍了一种新技术，它利用在石墨样品上反复暴露于低压（2.0 兆帕）毫秒级声波冲击波来促进石墨向金刚石的成功转化。这种转变是基于马氏体成核机制，通过价带 X 射线光电子能谱和电子衍射观察得到验证。通常情况下，只有在纳秒级动态压缩实验中，压力达到 50-60 GPa 或更高时才会形成金刚石。本研究为制造合成金刚石提供了一个新的平台，也为金刚石的形成提供了一条新的科学途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$Acoustic shock wave-induced sp2-to-sp3-type phase transition-part II: Evidence of the presence of diamond from valance band spectra and electronic diffraction pattern$

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Acoustic shock wave-induced sp2-to-sp3-type phase transition-part II: Evidence of the presence of diamond from valance band spectra and electronic diffraction pattern

Here, we introduce a novel technique that utilizes repeated exposure to low-pressure (2.0 MPa) millisecond acoustic shock waves on a graphite sample to facilitate the successful transformation of graphite into diamond. This transformation is based on a martensitic nucleation mechanism verified through valance-band X-ray photoelectron spectroscopic and electron diffraction observations. Typically, diamond formation occurs only under pressures of 50–60 GPa or more in nanosecond dynamic compression experiments. The present work offers a new platform to make synthetic diamonds and a new scientific path for diamond formation.

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.