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  • Aslandukova, AlenaUniv Bayreuth, Germany (author)

Diverse high-pressure chemistry in Y-NH3BH3 and Y–paraffin oil systems

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • AMER ASSOC ADVANCEMENT SCIENCE,2024
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:liu-203793
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-203793URI
  • https://doi.org/10.1126/sciadv.adl5416DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Funding Agencies|Deutsche Forschungsgemeinschaft (DFG) [BY112/2-1, DU 954-11/1, DU 393-9/2, DU 393-13/1, DU 945/15- 1]; UKRI Future Leaders Fellowship [MR/V025724/1]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoeping University [2009 00971]; NSF-earth Sciences [EAR-1634415]; DOE Office of Science [DE-AC02- 06CH11357]; Open Access Publishing Fund of the University of Bayreuth
  • The yttrium-hydrogen system has gained attention because of near-ambient temperature superconductivity reports in yttrium hydrides at high pressures. We conducted a study using synchrotron single-crystal x-ray diffraction (SCXRD) at 87 to 171 GPa, resulting in the discovery of known (two YH3 phases) and five previously unknown yttrium hydrides. These were synthesized in diamond anvil cells by laser heating yttrium with hydrogen-rich precursors-ammonia borane or paraffin oil. The arrangements of yttrium atoms in the crystal structures of new phases were determined on the basis of SCXRD, and the hydrogen content estimations based on empirical relations and ab initio calculations revealed the following compounds: Y3H11, Y2H9, Y4H23, Y13H75, and Y4H25. The study also uncovered a carbide (YC2) and two yttrium allotropes. Complex phase diversity, variable hydrogen content in yttrium hydrides, and their metallic nature, as revealed by ab initio calculations, underline the challenges in identifying superconducting phases and understanding electronic transitions in high-pressure synthesized materials.

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  • Aslandukov, AndreyUniv Bayreuth, Germany (author)
  • Laniel, DominiqueUniv Edinburgh, Scotland (author)
  • Yin, YuqingLinköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Univ Bayreuth, Germany; Shandong Univ, Peoples R China(Swepub:liu)yuqyi17 (author)
  • Akbar, Fariia IasminUniv Bayreuth, Germany (author)
  • Bykov, MaximUniv Cologne, Germany (author)
  • Fedotenko, TimofeyDeutsch Elektronen Synchrotron DESY, Germany (author)
  • Glazyrin, KonstantinDeutsch Elektronen Synchrotron DESY, Germany (author)
  • Pakhomova, AnnaEuropean Synchrotron Radiat Facil, France (author)
  • Garbarino, GastonEuropean Synchrotron Radiat Facil, France (author)
  • Bright, Eleanor LawrenceEuropean Synchrotron Radiat Facil, France (author)
  • Wright, JonathanEuropean Synchrotron Radiat Facil, France (author)
  • Hanfland, MichaelEuropean Synchrotron Radiat Facil, France (author)
  • Chariton, StellaUniv Chicago, IL 60637 USA (author)
  • Prakapenka, VitaliUniv Chicago, IL 60637 USA (author)
  • Doubrovinckaia, NataliaLinköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Univ Bayreuth, Germany(Swepub:liu)natdo06 (author)
  • Dubrovinsky, LeonidUniv Bayreuth, Germany (author)
  • Univ Bayreuth, GermanyUniv Edinburgh, Scotland (creator_code:org_t)

Related titles

  • In:Science Advances: AMER ASSOC ADVANCEMENT SCIENCE10:112375-2548

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