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

• Published in: Scientific reports Vol. 11; no. 1; p. 14859
• Main Authors: 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
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 21.07.2021; Nature Publishing Group; Nature Portfolio
• Subjects: 639/301/119; 639/301/119/2795; 639/301/930; Compression; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; condensed-matter physics; Humanities and Social Sciences; Kinetics; multidisciplinary; Phase transitions; phase transitions and critical phenomena; Science; Science (multidisciplinary); techniques and instrumentation; X-ray diffraction
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-021-94260-y

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.