Compression-rate dependence of pressure-induced phase transitions in Bi

Journal Article · 21 July 2021 · Scientific Reports

DOI: https://doi.org/10.1038/s41598-021-94260-y · OSTI ID:1808902

Husband, Rachel J.; O’Bannon, Earl F.; Liermann, Hanns-Peter; Lipp, Magnus J.; Méndez, Alba S. J.; Konôpková, Zuzana; McBride, Emma E.; Evans, William J.; Jenei, Zsolt

Abstract It is qualitatively well known that kinetics related to nucleation and growth can shift apparent phase boundaries from their equilibrium value. In this work, we have measured this effect in Bi using time-resolved X-ray diffraction with unprecedented 0.25 ms time resolution, accurately determining phase transition pressures at compression rates spanning five orders of magnitude (10 ^–2 –10 ³  GPa/s) using the dynamic diamond anvil cell. An over-pressurization of the Bi-III/Bi-V phase boundary is observed at fast compression rates for different sample types and stress states, and the largest over-pressurization that is observed is ΔP = 2.5 GPa. The work presented here paves the way for future studies of transition kinetics at previously inaccessible compression rates.

• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1808902
• Journal Information: Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 11; ISSN 2045-2322
• Publisher: Nature Publishing GroupCopyright Statement
• Country of Publication: United Kingdom
• Language: English