Materials Science

Homoepitaxial Diamond Grown in a Liquid Metal Solvent

Authors

  • Yan Gong Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea & Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea ,
  • Da Luo Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea ,
  • Myeonggi Choe Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea & Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea ,
  • Chohee Hyun UNIST Central Research Facilities (UCRF), Ulsan National University of Science and Technology (UNIST), Ulsan 44919, Republic of Korea ,
  • Chunhui Wang Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea ,
  • Meihui Wang Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea ,
  • Kyung Seong Won Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea ,
  • Tae Joo Shin UNIST Central Research Facilities (UCRF), Ulsan National University of Science and Technology (UNIST), Ulsan 44919, Republic of Korea & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National University of Science and Technology (UNIST), Ulsan 44919, Republic of Korea ,
  • Zonghoon Lee Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea & Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea ,
  • Da Zhan State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China ,
  • Rodney Ruoff Center for Multidimensional Carbon Materials (CMCM of the Institute for Basic Science), Ulsan 44919, Republic of Korea & Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea & Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea & School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea

Abstract

A single-crystal diamond substrate (SCDS) with a (100) surface orientation was submerged in liquid gallium containing a small amount of dissolved silicon, and exposed to a mixture of methane and hydrogen at 1 atm and 900 ºC. New growth diamonds were found that are single crystal square pyramids with (111) facets and that are homoepitaxial to the substrate, as proven by scanning and transmission electron microscopy, and small angle X-ray scattering and diffraction. Raman spectroscopy with 13C-labeling prove that the methane as well as the SCDS are the carbon source for the newly grown diamond. This approach opens up new ways for growing diamond in liquid metal systems.

Content

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