Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Annealing of Pyrolytic Graphite under Pressure

Nature volume 198, pages 1192–1193 (1963)Cite this article

Abstract

PREVIOUS measurements on specimens of pyrolytic graphite have indicated p-type semiconduction in the c-axis direction1 with predominantly n-type metallic conduction in the a-axis direction, conferring a net electrical anisotropy (ρc/ρa) of about 5,000. The thermal conductivity is also markedly anisotropic, with Ka/Kc about 250 at room temperature, with values of Ka up to five times that of copper, and twice that of diamond2. The scientific and technical interest of this anisotropy makes it desirable to obtain large specimens of graphite with near single crystal perfection in order to investigate and exploit these properties.

This is a preview of subscription content, access via your institution

Access options

Buy this article

  • Purchase on Springer Link
  • Instant access to full article PDF
Buy now

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Blackman, L. C. F., Dundas, P. H., and Ubbelohde, A. R., Proc. Roy. Soc., A, 255, 293 (1960).

    Article  ADS  CAS  Google Scholar 

  2. Hooker, C. N., Ubbelohde, A. R., and Young, D. A. (in the press).

  3. Guentert, O. J., and Cvikevich, S., Proc. Fifth Carbon Conf., 473 (Pergamon Press, London, 1962).

    Book  Google Scholar 

  4. Klein, C. A., J. App. Phys., 33, 3338 (1962).

    Article  ADS  CAS  Google Scholar 

  5. Blackman, L. C. F., and Ubbelohde, A. R., Proc. Roy. Soc., A, 266, 20 (1962).

    Article  ADS  CAS  Google Scholar 

  6. Moore, A. W., Ubbelohde, A. R., and Young, D. A., Brit. J. App. Phys., 13, 393 (1962).

    Article  ADS  CAS  Google Scholar 

  7. Moore, A. W., Ubbelohde, A. R., and Young, D. A., Chem. and Indust., 24, 1059 (1962).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemical Engineering and Chemical Technology, Prince Consort Road, London, S.W.7

    A. R. UBBELOHDE, D. A. YOUNG & A. W. MOORE

Authors
  1. A. R. UBBELOHDE
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. A. YOUNG
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. W. MOORE
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

UBBELOHDE, A., YOUNG, D. & MOORE, A. Annealing of Pyrolytic Graphite under Pressure. Nature 198, 1192–1193 (1963). https://doi.org/10.1038/1981192b0

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1038/1981192b0

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Search

Advanced search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing