Theoretical design of diamondlike superhard structures at high pressure

• 作者: 李全 郑伟涛
• 来源期刊: 中国物理B（英文版）
• 关键词: crystal structures high pressure superhard materials
• 年，卷（期）: 2016,（7）
• 页码范围: 076103-1-076103-8
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/25/7/076103

摘要

Diamond, as the hardest known material, has been widely used in industrial applications as abrasives, coatings, and cutting and polishing tools, but it is restricted by several shortcomings, e.g., its low thermal and chemical stability. Con-siderable efforts have been devoted to designing or synthesizing the diamond-like B–C–N–O compounds, which exhibit excellent mechanical property. In this paper, we review the recent theoretical design of diamond-like superhard structures at high pressure. In particular, the recently designed high symmetric phase of low-energy cubic BC3 meets the experimental observation, and clarifies the actual existence of cubic symmetric phase for the compounds formed by B–C–N–O system, besides the classical example of cubic boron nitride.