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High-pressure studies with x-rays using diamond anvil cells.

Guoyin Shen1, Ho Kwang Mao1,2

  • 1Geophysical Laboratory, Carnegie Institution of Washington, Washington DC, USA.

Reports on Progress in Physics. Physical Society (Great Britain)
|November 23, 2016
PubMed
Summary
This summary is machine-generated.

High-pressure science utilizes diamond anvil cells and synchrotron X-ray techniques to explore material properties. These advanced methods reveal crucial structural, electronic, and magnetic behaviors under extreme conditions.

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Area of Science:

  • High-pressure (HP) science
  • Materials science
  • Condensed matter physics

Background:

  • Pressure significantly alters matter's states.
  • Ultrahigh-pressure diamond anvil cells (DACs) enable multi-megabar compressions.
  • Synchrotron X-ray techniques allow in situ material property probing.

Purpose of the Study:

  • Introduce diamond anvil cell technology and its advancements.
  • Overview HP synchrotron techniques, applications, and challenges.
  • Discuss HP scientific studies across multidisciplinary fields.

Main Methods:

  • Diamond anvil cell (DAC) technology for extreme pressure generation.
  • Synchrotron X-ray techniques including spectroscopy (emission, Raman, inelastic, resonant inelastic, nuclear resonant), imaging, and diffraction (radial and standard).
  • Integration with heating (laser, resistive), cooling (cryogenic), and pressure media (hydrostatic, uniaxial).

Main Results:

  • HP X-ray emission spectroscopy reveals electronic states.
  • HP X-ray Raman spectroscopy probes chemical bonding in light elements.
  • HP inelastic X-ray scattering accesses electronic phenomena like band structure and Fermi surfaces.
  • HP resonant inelastic X-ray scattering investigates core excitations and spin-resolved electronic structure.
  • HP nuclear resonant X-ray spectroscopy provides phonon density of states.
  • HP X-ray imaging offers insights into hierarchical structures and dynamic processes.
  • HP X-ray diffraction determines material structures and densities.
  • HP radial X-ray diffraction yields elastic and rheological information.

Conclusions:

  • The synergy of DACs and synchrotron X-rays enables comprehensive material characterization.
  • Investigations cover structural, vibrational, electronic, and magnetic properties.
  • This approach facilitates understanding of materials under diverse pressure-temperature conditions.