Roles of boron in growth of diamond grains in ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by pulsed laser deposition

Shinya Ohmagari, Yuki Katamune, Hikaru Lchinose, Tsuyoshi Yoshitake

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Boron doped ultrananocrystalline diamond (UNCD)/hydrogenated amorphous carbon composite films prepared by pulsed laser deposition were structurally investigated. With an increase in the boron content, the grain size was increased from 5 to 23 nm accompanying by the lattice constant approaching to that of bulk diamond. The near-edge X-ray absorption fine-structure revealed that boron atoms are preferentially distributed into grain boundaries. On the basis of the results, the roles of the boron atoms in the enhanced crystalline growth are discussed. We consider that the crystalline growth posterior to the nucleation is facilitated by boron atoms existing neighbor to UNCD grains or by boron-containing energetic species in plasma.

    Original languageEnglish
    Title of host publicationDiamond Electronics and Biotechnology - Fundamentals to Applications V
    Pages69-74
    Number of pages6
    DOIs
    Publication statusPublished - 2012
    Event2011 MRS Fall Meeting - Boston, MA, United States
    Duration: Nov 28 2011Dec 2 2011

    Publication series

    NameMaterials Research Society Symposium Proceedings
    Volume1395
    ISSN (Print)0272-9172

    Other

    Other2011 MRS Fall Meeting
    CountryUnited States
    CityBoston, MA
    Period11/28/1112/2/11

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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  • Cite this

    Ohmagari, S., Katamune, Y., Lchinose, H., & Yoshitake, T. (2012). Roles of boron in growth of diamond grains in ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by pulsed laser deposition. In Diamond Electronics and Biotechnology - Fundamentals to Applications V (pp. 69-74). (Materials Research Society Symposium Proceedings; Vol. 1395). https://doi.org/10.1557/opl.2012.339