Effect of Interfacial Segregation on Phase Decomposition of a Thin Film on a Patterned Substrate

William C. Johnson, S. M. Wise, J. Y. Huh, J. Favergeon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Numerical simulations of phase decomposition in thin films on patterned substrates are presented for a binary alloy in order to study the influence of substrate composition on microstructural evolution. For systems with a substrate composition less than the film composition, a preferential segregation of A to the interface was observed and no phase decomposition occurred within the film. For patterned systems with a substrate composition exceeding the film composition, the B-rich phase was able to grow by a barrierless transformation for a range of film compositions outside the chemical spinodal. The number of precipitates which formed on the mesa, the dihedral angles at the three-phase trijunctions, and the resulting microstructure within the film were shown to be sensitive to the substrate composition.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalMetals and Materials International
Issue number1
Publication statusPublished - 2003 Feb

Bibliographical note

Funding Information:
We are grateful for the financial support of this work by the U.S. National Science Foundation through grant DMR9902110 (WCJ, SMW), the Conseil Régional de Bourgogne (JF), and the Korean Science and Engineering Foundation through grant R01-2001-00259 (JYH).


  • Patterned substrate
  • Phase decomposition
  • Segregation
  • Thin film
  • Wetting

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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