Open AccessFe 0.79 Si 0.07 B 0.14 metallic glass gaskets for high‐pressure research beyond 1 Mbar
Author(s) -
Dong Weiwei,
Glazyrin Konstantin,
Khandarkhaeva Saiana,
Fedotenko Timofey,
Bednarčík Jozef,
Greenberg Eran,
Dubrovinsky Leonid,
Dubrovinskaia Natalia,
Liermann Hanns-Peter
Publication year - 2022
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577522007573
Subject(s) - gasket , materials science , diamond anvil cell , diffraction , diamond , metal , pressure vessel , composite material , optics , metallurgy , physics
A gasket is an important constituent of a diamond anvil cell (DAC) assembly, responsible for the sample chamber stability at extreme conditions for X‐ray diffraction studies. In this work, we studied the performance of gaskets made of metallic glass Fe 0.79 Si 0.07 B 0.14 in a number of high‐pressure X‐ray diffraction (XRD) experiments in DACs equipped with conventional and toroidal‐shape diamond anvils. The experiments were conducted in either axial or radial geometry with X‐ray beams of micrometre to sub‐micrometre size. We report that Fe 0.79 Si 0.07 B 0.14 metallic glass gaskets offer a stable sample environment under compression exceeding 1 Mbar in all XRD experiments described here, even in those involving small‐molecule gases ( e.g. Ne, H 2 ) used as pressure‐transmitting media or in those with laser heating in a DAC. Our results emphasize the material's importance for a great number of delicate experiments conducted under extreme conditions. They indicate that the application of Fe 0.79 Si 0.07 B 0.14 metallic glass gaskets in XRD experiments for both axial and radial geometries substantially improves various aspects of megabar experiments and, in particular, the signal‐to‐noise ratio in comparison to that with conventional gaskets made of Re, W, steel or other crystalline metals.