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@ARTICLE{Siska:617647,
      author       = {Siska, Emily and Smith, G. Alexander and Villa-Cortes,
                      Sergio and Conway, Lewis J. and Husband, Rachel and Van
                      Cleave, Joshua and Petitgirard, Sylvain and Cerantola,
                      Valerio and Appel, Karen and Baehtz, Carsten and Bouffetier,
                      Victorien and Dwivedi, Anand and Göde, Sebastian and
                      Gorkhover, Tais and Konopkova, Zuzana and Hosseini Saber,
                      Seyedmohammadali and Kuschel, Stephan and Laurus, Torsten
                      and Nakatsutsumi, Motoaki and Strohm, Cornelius and
                      Sztuk-Dambietz, Jolanta and Zastrau, Ulf and Smith, Dean and
                      Lawler, Keith V. and Pickard, Chris J. and Schwartz, Craig
                      P. and Salamat, Ashkan},
      title        = {{U}ltrafast {Y}ttrium {H}ydride {C}hemistry at {H}igh
                      {P}ressures via {N}on-equilibrium {S}tates {I}nduced by an
                      {X}-ray {F}ree {E}lectron {L}aser},
      journal      = {The journal of physical chemistry letters},
      volume       = {15},
      number       = {39},
      issn         = {1948-7185},
      address      = {Washington, DC},
      publisher    = {ACS},
      reportid     = {PUBDB-2024-06953},
      pages        = {9912-9919},
      year         = {2024},
      abstract     = {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.},
      cin          = {FS-DS / $XFEL_E1_HED$ / FS-HIBEF / XFEL-User /
                      $XFEL_DO_DD_DET$},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-DS-20120731 /
                      $I:(DE-H253)XFEL_E1_HED-20210408$ /
                      I:(DE-H253)FS-HIBEF-20240110 / I:(DE-H253)XFEL-User-20170713
                      / $I:(DE-H253)XFEL_DO_DD_DET-20210408$},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631)},
      pid          = {G:(DE-HGF)POF4-631},
      experiment   = {EXP:(DE-H253)XFEL-SASE2-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:39303208},
      UT           = {WOS:001318699400001},
      doi          = {10.1021/acs.jpclett.4c02134},
      url          = {https://bib-pubdb1.desy.de/record/617647},
}