We have measured the reflectance of rhenium in the visible region to pressures up to 100 GPa in a diamond anvil cell (DAC). By photographing the reflecting surface, we visually show that there are challenges to obtaining accurate values in a DAC for several reasons, including cupping of the diamonds and roughening of the surface with the increase in pressure. We propose some useful procedures, such as careful alignment of the incident light and using thin gaskets to minimize cupping of the diamonds as well as measurement in the central region of the diamond culet. We also show that knowledge of the reflectance of rhenium can overcome the problem of absorption of light by diamonds when studying the reflectance of materials at high pressure in a DAC.
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3 January 2022
Research Article|
January 03 2022
Reflectance of rhenium as a function of pressure in a diamond anvil cell Available to Purchase
Jing Song
Irina Chuvashova
Isaac F. Silvera
a)
Current address: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
b)
Current address: Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th St., Miami, FLorida 33199, USA
c)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 120, 011601 (2022)
Article history
Received:
October 22 2021
Accepted:
December 19 2021
Citation
Jing SongIrina ChuvashovaIsaac F. Silvera; Reflectance of rhenium as a function of pressure in a diamond anvil cell. Appl. Phys. Lett. 3 January 2022; 120 (1): 011601. https://doi.org/10.1063/5.0076263
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