- Physical Review Journals
All JournalsPhysics Magazine

Physical Review B

Export citation

Export citation

Choose format for download:

Download Citation

    X-ray diffraction and transmission-electron microscopy of natural polycrystalline graphite recovered from high pressure

    Shoichi Endo and Naoki Idani

    Ryuichiro Oshima

    Kaoru J. Takano and Masao Wakatsuki

    • Research Center for Extreme Materials, Osaka University, Toyonaka, Osaka 560, Japan

    • Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan

    • Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305, Japan

    PDF

    Phys. Rev. B 49, 22 – Published 1 January, 1994

    DOI: https://doi.org/10.1103/PhysRevB.49.22

    Abstract

    Natural polycrystalline graphite was compressed using a 6-8-type multianvil and a Drickamer cell, and the recovered samples were examined by x-ray diffraction and transmission-electron microscopy. Diamond was formed in the samples from 14∼20 GPa and 800∼1200 °C generated by the multianvil. These P-T conditions are included in the region where the formation of hexagonal diamond was reported by Bundy and Kasper. Hexagonal diamond was not apparent in any of the recovered samples. Instead, the formation of n-diamond, which is a new carbon phase recently identified in a shock-wave study, by static compression was confirmed in the samples from 40 GPa, 25 °C and 14 GPa, 1200 °C.

    View figure in article

    Authorization Required

    We need you to provide your credentials before accessing this content.

    Other Options

    References (Subscription Required)

    Outline

    Information

    Phys. Rev. B 49, 22– Published 1 January, 1994
    • Received 25 June 1993

    © 1994 American Physical Society

    Sign In to Your Journals Account

    Filter

    Filter

    Article Lookup

    Enter a citation