Publication Cover
High Pressure Research
An International Journal
Volume 44, 2024 - Issue 2
201
Views
0
CrossRef citations to date
0
Altmetric
Articles

Leveraging oxide reactive sputtering for thermal insulation in laser-heated diamond anvil cell

, , &
Pages 159-167 | Received 08 Dec 2023, Accepted 18 Apr 2024, Published online: 02 May 2024
 

ABSTRACT

We have developed an oxide reactive sputtering technique aiming at rapidly sputtering high-quality oxide films on a diamond surface, providing excellent thermal insulation in high-pressure and temperature experiments using a laser-heated diamond anvil cell (LH-DAC). We identified conditions for rapid deposition of an alumina layer on diamond anvils, showing deposition rates as high as 0.67 um/hr. We also investigated the deposition conditions of zirconia, which have lower thermal conductivity than alumina. Laser-heating tests were performed at high pressures and temperatures to evaluate the thermal insulation of the oxide film deposited on the diamond anvils. The heating efficiency of zirconia-deposited anvils was higher than that of the alumina-deposited ones. Our zirconia-sputtered anvils were capable of generating up to 2580 K at around megabar pressure without additional thermal insulation, demonstrating the potential of this technique for ultra-high temperature generation.

Acknowledgments

We thank two anonymous reviewers for their helpful comments. We acknowledge Shoh Tagawa for valuable discussion.

Disclosure statement

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

Additional information

Funding

This work was supported by the JSPS grants nos. 21H04968 to K.H. and 23K19083 to K.O. XRD measurements were performed at BL10XU, SPring-8 (proposal no. 2023B1322).

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.