skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Crystal structure of graphite under room-temperature compression and decompression

Abstract

Recently, sophisticated theoretical computational studies have proposed several new crystal structures of carbon (e.g., bct-C{sub 4}, H-, M-, R-, S-, W-, and Z-carbon). However, until now, there lacked experimental evidence to verify the predicted high-pressure structures for cold-compressed elemental carbon at least up to 50 GPa. Here we present direct experimental evidence that this enigmatic high-pressure structure is currently only consistent with M-carbon, one of the proposed carbon structures. Furthermore, we show that this phase transition is extremely sluggish, which led to the observed broad x-ray diffraction peaks in previous studies and hindered the proper identification of the post-graphite phase in cold-compressed carbon.

Authors:
; ; ;  [1];  [2]
  1. (Yale)
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCES
OSTI Identifier:
1049579
Resource Type:
Journal Article
Journal Name:
Sci. Rep.
Additional Journal Information:
Journal Volume: 2; Journal Issue: 2012
Country of Publication:
United States
Language:
ENGLISH
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARBON; COMPRESSION; CRYSTAL STRUCTURE; GRAPHITE; PHYSICS; X-RAY DIFFRACTION

Citation Formats

Wang, Yuejian, Panzik, Joseph E., Kiefer, Boris, Lee, Kanani K.M., and New Mexico State). Crystal structure of graphite under room-temperature compression and decompression. United States: N. p., 2012. Web. doi:10.1038/srep00520.
Wang, Yuejian, Panzik, Joseph E., Kiefer, Boris, Lee, Kanani K.M., & New Mexico State). Crystal structure of graphite under room-temperature compression and decompression. United States. doi:10.1038/srep00520.
Wang, Yuejian, Panzik, Joseph E., Kiefer, Boris, Lee, Kanani K.M., and New Mexico State). Tue . "Crystal structure of graphite under room-temperature compression and decompression". United States. doi:10.1038/srep00520.
@article{osti_1049579,
title = {Crystal structure of graphite under room-temperature compression and decompression},
author = {Wang, Yuejian and Panzik, Joseph E. and Kiefer, Boris and Lee, Kanani K.M. and New Mexico State)},
abstractNote = {Recently, sophisticated theoretical computational studies have proposed several new crystal structures of carbon (e.g., bct-C{sub 4}, H-, M-, R-, S-, W-, and Z-carbon). However, until now, there lacked experimental evidence to verify the predicted high-pressure structures for cold-compressed elemental carbon at least up to 50 GPa. Here we present direct experimental evidence that this enigmatic high-pressure structure is currently only consistent with M-carbon, one of the proposed carbon structures. Furthermore, we show that this phase transition is extremely sluggish, which led to the observed broad x-ray diffraction peaks in previous studies and hindered the proper identification of the post-graphite phase in cold-compressed carbon.},
doi = {10.1038/srep00520},
journal = {Sci. Rep.},
number = 2012,
volume = 2,
place = {United States},
year = {2012},
month = {10}
}