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Showing 1–7 of 7 results
Advanced filters: Author: H. Cynn Clear advanced filters

  • Static pressures exceeding 4 million atmospheres are extremely challenging to achieve, but are necessary for the study of matter that exists under these conditions in natural environments. Here, diamonds anvils with a toroidal design are demonstrated to sustain over 6 million atmospheres in a diamond anvil cell.

    • Zs. Jenei
    • E. F. O’Bannon
    • W. J. Evans
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-6

  • A precise structure measurement of liquid carbon at pressures of around 1 million atmospheres obtained by in situ X-ray diffraction at an X-ray free-electron laser shows a complex fluid with transient bonding and approximately four nearest neighbours on average.

    • D. Kraus
    • J. Rips
    • M. I. McMahon
    ResearchOpen Access
    Nature
    Volume: 642, P: 351-355

  • The authors perform heating experiments using femtosecond X-ray free electron laser pulses to explore the phase stability of superionic H2O. The absence of a face-centered cubic phase below 50 GPa, where superionic ice forms from the melt, is attributed to the short heating time and may help understanding the stability of superionic phases in ice-rich planets.

    • R. J. Husband
    • H. P. Liermann
    • M. I. McMahon
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-13

  • Experiments using high-intensity X-ray pulses incident on high-pressure hydrocarbons suggest that diamond formation can occur at shallower depths in icy planets and may play a role in the internal convection that generates their magnetic fields.

    • Mungo Frost
    • R. Stewart McWilliams
    • Alexander F. Goncharov
    Research
    Nature Astronomy
    Volume: 8, P: 174-181

  • The origin of the volume collapse of cerium, the only elemental metal with a critical point in the solid phase, remains elusive. Here the authors show that, near the critical point, the f-electrons make cerium lose its compressive strength while maintaining a finite shear strength—which makes cerium unexpectedly auxetic.

    • Magnus J. Lipp
    • Zs. Jenei
    • W. J. Evans
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-8

  • Subtle anomalies in how the structure of metallic osmium evolves with pressure are detected using powder X-ray diffraction measurements at ultra-high static pressures; the anomaly at 440 gigapascals is attributed to an electronic transition caused by pressure-induced interactions between core electrons.

    • L. Dubrovinsky
    • N. Dubrovinskaia
    • I. A. Abrikosov
    Research
    Nature
    Volume: 525, P: 226-229