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Engel-brewer electron correlation modela critical discussion and revision of concepts

Materials Transactions, JIM, ISSN: 0916-1821, Vol: 37, Issue: 3, Page: 195-202
1996
  • 11
    Citations
  • 0
    Usage
  • 4
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    11
    • Citation Indexes
      11
  • Captures
    4

Article Description

A critical review of the Engel-Brewer theory of metallic bonding is presented with an emphasis on its inapplicability to transition metals. Taking recourse to pseudopotential arguments for nontransition metals and to tight binding model for d-transition metals, the cohesive and crystal structure trends among metals across the periodic table is briefly discussed. It is clear that a direct inclusion of d-electron counts is absolutely necessary to correlate meaningfully the observed structural trend with the valence electron configuration. In view of this limitation, the classical Brewer's scheme is revised in such a manner that some of the anomalies encountered in the case of transition metals are removed. A discussion of the philosophical basis of Brewer's model is presented.

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