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Related Experiment Videos

A study of charge density in copper.

J Friis1, B Jiang, K Marthinsen

  • 1Department of Physics, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway. jesper.friis@phys.ntnu.no

Acta Crystallographica. Section A, Foundations of Crystallography
|February 23, 2005
PubMed
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Quantitative convergent-beam electron diffraction (QCBED) precisely measured copper

Area of Science:

  • Solid State Physics
  • Materials Science
  • Crystallography

Background:

  • Accurate determination of structure factors is crucial for understanding material properties.
  • Quantitative convergent-beam electron diffraction (QCBED) offers high precision for low-order structure factors.

Purpose of the Study:

  • To combine QCBED and gamma-ray diffraction data for an enhanced experimental dataset of copper structure factors.
  • To investigate the charge distribution in copper using this comprehensive dataset.

Main Methods:

  • Utilized quantitative convergent-beam electron diffraction (QCBED) for precise low-order structure factor measurements.
  • Integrated relativistically corrected gamma-ray diffraction data.
  • Applied maximum-entropy and multipole analyses to charge deformation maps.

Related Experiment Videos

  • Compared experimental results with density functional theory (DFT) calculations.

    • Main Results:

    • Generated an extensive and highly accurate experimental dataset for copper structure factors.
    • Produced charge deformation maps revealing electron density distribution.
    • Observed an almost spherical charge depletion around atomic sites in copper.

    Conclusions:

    • The combined QCBED and gamma-ray data provide a detailed picture of charge distribution in copper.
    • The findings indicate characteristic metallic bonding in copper.
    • Experimental results align with theoretical predictions from DFT.