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Raman Shift of Stressed Diamond Anvils: Pressure Calibration and Culet Geometry Dependence

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.2963360· OSTI ID:945135
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The pressure dependence of the Raman shift of diamond for highly stressed anvils at the diamond-anvil sample interface has been measured for different culet shapes up to 180 GPa at ambient temperature. By using hydrogen samples, which constitute both a quasi-hydrostatic medium and a sensitive pressure sensor, some of the effects of culet and tip size have been determined. We propose that the divergent results in the literature can be partly ascribed to different anvil geometries. Experiments show increasing second order dependence of the diamond Raman shift with pressure for decreasing tip size. This is an important consideration when using the diamond anvils as a pressure sensor.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
945135
Report Number(s):
LLNL-JRNL-402921
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Vol. 104; ISSN JAPIAU; ISSN 0021-8979
Country of Publication:
United States
Language:
English

References (21)

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Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMBIENT TEMPERATURE
CALIBRATION
DIAMONDS
GEOMETRY
HYDROGEN
PRESSURE DEPENDENCE