高压金属氢化物中氢的直接定量

IF 4.7 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Matter and Radiation at Extremes Pub Date : 2022-08-08 DOI:10.1063/5.0119159

T. Meier, D. Laniel, Florian Trybel

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引用次数: 0

摘要

高压金属氢化物(MH)的研究在凝聚态物理中发展成为一个蓬勃发展的领域，因为金属化合物表现出声子介导的近室温超导性。然而，在确定反应产物化学式方面的严重限制，特别是在它们的氢含量方面，阻碍了对合成相的深入理解，并可能导致严重错误的结论。在这里，我们提出了一种使用核磁共振波谱直接访问高压下(激光加热)金刚石砧细胞中合成的MH固体的氢含量的方法。我们证明，该方法可以用于研究氢含量范围很广的MH化合物，从MH x (x = 0.15 (CuH0.15))到MH x≤6.4 (H6±0.4S5)。

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Direct hydrogen quantification in high-pressure metal hydrides

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 MH x with x = 0.15 (CuH0.15) to x ≲ 6.4 (H6±0.4S5).

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来源期刊

Matter and Radiation at Extremes Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

8.60

自引率

9.80%

发文量

160

审稿时长

15 weeks

期刊介绍： Matter and Radiation at Extremes (MRE), is committed to the publication of original and impactful research and review papers that address extreme states of matter and radiation, and the associated science and technology that are employed to produce and diagnose these conditions in the laboratory. Drivers, targets and diagnostics are included along with related numerical simulation and computational methods. It aims to provide a peer-reviewed platform for the international physics community and promote worldwide dissemination of the latest and impactful research in related fields.