TY  - JOUR
AU  - Siska, Emily
AU  - Smith, G. Alexander
AU  - Villa-Cortes, Sergio
AU  - Conway, Lewis J.
AU  - Husband, Rachel
AU  - Van Cleave, Joshua
AU  - Petitgirard, Sylvain
AU  - Cerantola, Valerio
AU  - Appel, Karen
AU  - Baehtz, Carsten
AU  - Bouffetier, Victorien
AU  - Dwivedi, Anand
AU  - Göde, Sebastian
AU  - Gorkhover, Tais
AU  - Konopkova, Zuzana
AU  - Hosseini Saber, Seyedmohammadali
AU  - Kuschel, Stephan
AU  - Laurus, Torsten
AU  - Nakatsutsumi, Motoaki
AU  - Strohm, Cornelius
AU  - Sztuk-Dambietz, Jolanta
AU  - Zastrau, Ulf
AU  - Smith, Dean
AU  - Lawler, Keith V.
AU  - Pickard, Chris J.
AU  - Schwartz, Craig P.
AU  - Salamat, Ashkan
TI  - Ultrafast Yttrium Hydride Chemistry at High Pressures via Non-equilibrium States Induced by an X-ray Free Electron Laser
JO  - The journal of physical chemistry letters
VL  - 15
IS  - 39
SN  - 1948-7185
CY  - Washington, DC
PB  - ACS
M1  - PUBDB-2024-06953
SP  - 9912-9919
PY  - 2024
AB  - Controlling the formation and stoichiometric content of the desired phases of materials has become of central interest for a variety of fields. The possibility of accessing metastable states by initiating reactions by X-ray-triggered mechanisms over ultrashort time scales has been enabled by the development of X-ray free electron lasers (XFELs). Utilizing the exceptionally high-brilliance X-ray pulses from the EuXFEL, we report the synthesis of a previously unobserved yttrium hydride under high pressure, along with nonstoichiometric changes in hydrogen content as probed at a repetition rate of 4.5 MHz using time-resolved X-ray diffraction. Exploiting non-equilibrium pathways, we synthesize and characterize a hydride in a Weaire–Phelan structure type at pressures as low as 125 GPa, predicted using a crystal structure search, with a hydrogen content of 4.0–5.75 hydrogens per cation, that is enthalpically metastable on the convex hull.
LB  - PUB:(DE-HGF)16
C6  - pmid:39303208
UR  - <Go to ISI:>//WOS:001318699400001
DO  - DOI:10.1021/acs.jpclett.4c02134
UR  - https://bib-pubdb1.desy.de/record/617647
ER  -