Open AccessSingle crystal toroidal diamond anvils for high pressure experiments beyond 5 megabar
Author(s) -
Zsolt Jenei,
E. F. O’Ban,
Samuel T. Weir,
Hyunchae Cynn,
M. J. Lipp,
W. J. Evans
Publication year - 2018
Publication title -
nature communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.559
H-Index - 365
ISSN - 2041-1723
DOI - 10.1038/s41467-018-06071-x
Subject(s) - diamond anvil cell , diamond , toroid , materials science , gasket , compression (physics) , crystal (programming language) , nanotechnology , high pressure , chemical physics , mechanics , chemistry , composite material , physics , plasma , nuclear physics , computer science , programming language
Static compression experiments over 4 Mbar are rare, yet critical for developing accurate fundamental physics and chemistry models, relevant to a range of topics including modeling planetary interiors. Here we show that focused ion beam crafted toroidal single-crystal diamond anvils with ~9.0 μm culets are capable of producing pressures over 5 Mbar. The toroidal surface prevents gasket outflow and provides a means to stabilize the central culet. We have reached a maximum pressure of ~6.15 Mbar using Re as in situ pressure marker, a pressure regime typically accessed only by double-stage diamond anvils and dynamic compression platforms. Optimizing single-crystal diamond anvil design is key for extending the pressure range over which studies can be performed in the diamond anvil cell.