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Related Experiment Videos

High-pressure structures and phase transformations in elemental metals.

Malcolm I McMahon1, Richard J Nelmes

  • 1SUPA, School of Physics and Centre for Science at Extreme Conditions, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ, U.K.

Chemical Society Reviews
|September 28, 2006
PubMed
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High pressure transforms simple metallic structures into complex, often incommensurate, low-symmetry phases. This review details these high-pressure transitions for metallic elements groups 1-16.

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Crystallography

Background:

  • Most metals exhibit simple crystal structures at ambient conditions.
  • High pressure induces significant changes in metallic element structures.
  • Complex and incommensurate structures are increasingly observed under pressure.

Purpose of the Study:

  • To critically review the high-pressure behavior of metallic elements (groups 1-16).
  • To summarize current understanding of structural phase transitions at ambient temperature under pressure.
  • To identify emerging systematics in high-pressure metallic structures.

Main Methods:

  • Comprehensive literature review of high-pressure studies on metallic elements.
  • Detailed analysis of phase transitions and resulting crystal structures.

Related Experiment Videos

  • Synthesis and discussion of existing experimental and theoretical data.

    • Main Results:

    • Many metallic elements transition to low-symmetry, complex structures under high pressure.
    • An increasing number of these high-pressure phases are incommensurate.
    • Systematic trends in structural complexity and transition pressures are emerging.

    Conclusions:

    • High pressure is a key factor in uncovering novel metallic structures.
    • Understanding these transitions is crucial for materials science and condensed matter physics.
    • Further research is needed to fully elucidate the systematics of metallic element behavior under pressure.