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Updated: Apr 17, 2026

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Published on: March 7, 2018
An APT investigation of an amorphous Cr-B-C thin film
T Boll1, M Thuvander1, S Koch1
1Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
Abstract:
A magnetron sputtered amorphous Cr-B-C thin film was investigated by means of atom probe tomography (APT). The film is constituted of two phases; a Cr-rich phase present as a few nanometer large regions embedded in a Cr-poor phase (tissue phase). The Cr-rich regions form columnar chains oriented parallel to the growth direction of the film. It was found that the Cr-rich regions have a higher B:C ratio than the Cr-poor regions. The composition of the phases was determined as approximately 35Cr-33B-30C and 15Cr-40B-42C (at%), respectively. The results suggest that this type of nanocomposite films has a more complex structure than previously anticipated, which may have an importance for the mechanical and electrical properties.
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