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Electron localization in a percolating network: An ESR study of carbon-black/polymer composites

Physical Review B - Condensed Matter and Materials Physics, ISSN: 1550-235X, Vol: 55, Issue: 15, Page: 9383-9386
1997
  • 14
    Citations
  • 0
    Usage
  • 4
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    14
    • Citation Indexes
      14
  • Captures
    4

Article Description

The electronic susceptibility (Formula presented) of conducting composites of carbon-black particles embedded in a nonconducting polymer matrix has been measured over a wide concentration and temperature range by electron-spin resonance (ESR). The onset of an extra Curie contribution to (Formula presented) below (Formula presented) K is seen as evidence for electron localization, as is the narrowing of the ESR line below 50 K. We show that Coulomb interactions have to be taken into account to explain these data and that the magnitude of the interaction is consistent with the value found previously from dc-conductivity data. © 1997 The American Physical Society.

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