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Direct hydrogen quantification in high-pressure metal hydrides
Center for High Pressure Science and Technology Advance Research, Beijing, China.ORCID iD: 0000-0003-4722-803X
Center for Science at Extreme Conditions, University of Edinburgh, Edinburgh, United Kingdom.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-0514-5084
2023 (English)In: Matter and Radiation at Extremes, ISSN 2468-2047, Vol. 8, no 1, article id 018401Article in journal (Refereed) Published
Abstract [en]

High-pressure metal hydride (MH) research evolved into a thriving field within condensed matter physics following the realization of metallic compounds showing phonon mediated near room-temperature superconductivity. However, severe limitations in determining the chemical formula of the reaction products, especially with regards to their hydrogen content, impedes a deep understanding of the synthesized phases and can lead to significantly erroneous conclusions. Here, we present a way to directly access the hydrogen content of MH solids synthesized at high pressures in (laser-heated) diamond anvil cells using nuclear magnetic resonance spectroscopy. We show that this method can be used to investigate MH compounds with a wide range of hydrogen content, from MHx with x = 0.15 (CuH0.15) to x ≲ 6.4 (H6±0.4S5).

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2023. Vol. 8, no 1, article id 018401
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-190897DOI: 10.1063/5.0119159ISI: 000907666400001OAI: oai:DiVA.org:liu-190897DiVA, id: diva2:1724260
Funder
Swedish Research Council, 2019-05600German Research Foundation (DFG), LA-4916/1-1
Note

Funding: Center for High Pressure Science and Technology Advance Research (HPSTAR); National Science Foundation of China [42150101]; National Key Research and Development Program of China [2022YFA1402301]; Alexander von Humboldt Foundation; Deutsche Forschungsgemeinschaft (DFG) [LA-4916/1-1]; UKRI Future Leaders Fellowship [MR/V025724/1]; Swedish Research Council (VR) [2019-05600]

Available from: 2023-01-05 Created: 2023-01-05 Last updated: 2023-01-24Bibliographically approved

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