Large-volume static compression using nano-polycrystalline diamond for opposed anvils in compact cells

T. Okuchi, S. Sasaki, T. Osakabe, Y. Ohno, S. Odake, H. Kagi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In order to extend the pressure regime of intrinsically low-sensitivity methods of measurement, such as neutron scattering and NMR, sample volume to be compressed in compact opposed-anvil cells is desired to be significantly increased. We hereby conducted a series of experiments using two types of compact cells equipped with enforced loading mechanisms. Super-hard nano-polycrystalline diamond (NPD) anvils were carefully prepared for large-volume compression in these cells. These anvils are harder, larger and stronger than single crystal diamond anvils, so that they could play an ideal role to accept the larger forces. Supported and unsupported anvil geometries were separately tested to evaluate this expectation. In spite of insufficient support to the anvils, pressures to 14 GPa were generated for the sample volume of > 0.1 mm3, without damaging the NPD anvils. These results demonstrate a large future potential of compact cells equipped with NPD anvils and enforced loading mechanism.

Original languageEnglish
Article number012188
JournalJournal of Physics: Conference Series
Volume215
DOIs
Publication statusPublished - May 12 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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