Compression rate of dynamic diamond anvil cells from room temperature to 10 K

Year: 2022

Authors: Yan J.; Liu X.; Gorelli F.A.; Xu H.; Zhang H.; Hu H.; Gregoryanz E.; Dalladay-Simpson P.

Autors Affiliation: Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China; Univ Sci & Technol China, Hefei 230026, Peoples R China; Ctr High Pressure Sci & Technol Adv Res, 1690 Cailun Rd, Shanghai 201203, Peoples R China; Ist Nazl Ott CNR INO, I-50019 Sesto Fiorentino, Italy; European Lab Non Linear Spect LENS, I-50019 Sesto Fiorentino, Italy; Univ Edinburgh, Ctr Sci Extreme Condit, Sch Phys & Astron, Edinburgh EH9 3FD, Scotland.

Abstract: There is an ever increasing interest in studying dynamic-pressure dependent phenomena utilizing dynamic Diamond Anvil Cells (dDACs), devices capable of a highly controlled rate of compression. Here, we characterize and compare the compression rate of dDACs in which the compression is actuated via three different methods: (1) stepper motor (S-dDAC), (2) gas membrane (M-dDAC), and (3) piezoactuator (P-dDAC). The compression rates of these different types of dDAC were determined solely on millisecond time-resolved R1-line fluorescence of a ruby sphere located within the sample chamber. Furthermore, these different dynamic compression-techniques have been described and characterized over a broad temperature and pressure range from 10 to 300 K and 0-50 GPa. At room temperature, piezoactuation (P-dDAC) has a clear advantage in controlled extremely fast compression, having recorded a compression rate of ~7 TPa/s, which is also found to be primarily influenced by the charging time of the piezostack. At 40-250 K, gas membranes (M-dDAC) have also been found to generate rapid compression of ~0.5-3 TPa/s and are readily interfaced with moderate cryogenic and ultrahigh vacuum conditions. Approaching more extreme cryogenic conditions (<10 K), a stepper motor driven lever arm (S-dDAC) offers a solution for high-precision moderate compression rates in a regime where P-dDACs and M-dDACs can become difficult to incorporate. The results of this paper demonstrate the applicability of different dynamic compression techniques, and when applied, they can offer us new insights into matter?s response to strain, which is highly relevant to physics, geoscience, and chemistry. Journal/Review: REVIEW OF SCIENTIFIC INSTRUMENTS

Volume: 93 (6)      Pages from: 063901-1  to: 063901-11

More Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 11874361 and 51727806), the Innovation Grant of CAS (Grant No. CXJJ-19-B08), the Youth Innovation Promotion Association of CAS (Grant No. 2021446), and the HFIPS Director´s Fund of CAS.
KeyWords: X-ray-diffraction; pressure; transition; hydrogen; phase
DOI: 10.1063/5.0091102

Citations: 5
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