Electronic structure and chemical bonding of amorphous chromium carbide thin films

J Phys Condens Matter. 2012 Jun 6;24(22):225004. doi: 10.1088/0953-8984/24/22/225004. Epub 2012 May 2.

Abstract

The microstructure, electronic structure and chemical bonding of chromium carbide thin films with different carbon contents have been investigated with high-resolution transmission electron microscopy, electron energy loss spectroscopy and soft x-ray absorption-emission spectroscopies. Most of the films can be described as amorphous nanocomposites with non-crystalline CrC(x) in an amorphous carbon matrix. At high carbon contents, graphene-like structures are formed in the amorphous carbon matrix. At 47 at.% carbon content, randomly oriented nanocrystallites are formed creating a complex microstructure of three components. The soft x-ray absorption-emission study shows additional peak structures exhibiting non-octahedral coordination and bonding.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon / chemistry*
  • Chromium / chemistry*
  • Elasticity
  • Electric Impedance
  • Electrons*
  • Hardness
  • Spectrum Analysis

Substances

  • Chromium
  • Carbon