Resistively heated, high pressure, membrane and screw driven diamond anvil cell

ABSTRACT

High temperature is of paramount importance in high pressure science. One of the leading tools in this respect is the resistively heated diamond anvil cell (DAC), where the heat is provided by small heaters, positioned close to the diamond/gasket/sample region (internally heated DAC, IHDAC) or by wrapping the DAC body into bigger heaters (externally heated DAC, EHDAC). Although IHDACs can reach sample temperatures higher than 1000 K, they are difficult to handle and the heater/diamond/gasket/sample region may be affected by strong thermal gradients potentially hindering accurate temperature measurements. Here we present a novel EHDAC, which overcomes these issues by uniquely joining: (i) high mechanical precision for multi-Mbar, (ii) high temperature alloys for operating to 1000 K, (iii) membrane or screw driven, easily switchable between each other, (iv) operation into a vacuum chamber, (v) uniform temperature, (vi) facile handling, and (vii) possibility to add internal heaters for achieving even higher temperatures.

KEYWORDS:

• Diamond anvil cell
• resistive heating
• vacuum chamber
• optical spectroscopy and X-ray diffraction

Acknowledgements

We acknowledge the PRIN project ZAPPING, number 2015HK93L7, granted by the Italian Ministry of Education, Universities and Research, MIUR. This work is also part of the SCENT project, which has received funding from the ATTRACT project funded by the European Union under Grant Agreement 777222. The ATTRACT consortium is not responsible for any use that may be made of the results.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

Additional information

Funding

This work was supported by Ministry of Education, Universities and Research, MIUR [grant number 2015HK93L7]. This work is also part of the SCENT project, which has received funding from the ATTRACT project funded by the European Union [grant number 777222].