Oxidation behavior of TiN/AlN multilayer films prepared by ion beam-assisted deposition

Do Geun Kim, Tae Yeon Seong, Young Joon Baik

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The oxidation behavior of TiN/AlN multilayers, which were deposited using an ion beam-assisted deposition (IBAD) process, with 2.9- and 16-nm bilayer periods was investigated. The 2.9-nm sample had a superlattice structure with cubic AlN and cubic TiN, while the 16-nm sample showed a conventional multilayer with hexagonal AlN and cubic TiN. The samples were annealed in air at various temperatures between 400 and 800°C. The degree of oxidation was analyzed using back-scattered electron imaging (BSEI) and X-ray diffraction (XRD) patterns. Auger electron spectroscopy (AES) depth profiling was also used to measure variations in chemical composition. Lattice imaging of transmission electron microscopy (TEM) was utilized to illustrate the crystallographic orientation and microstructure of the different thickness bilayer films. There was no measurable oxidation of the TiN/AlN multilayers annealed at less than 600°C, and crystalline TiO2 and Al2O3 began to appear at 700 and 800°C, respectively, which showed more oxidation resistance than TiN film. Under the same average composition ratio of TiN/AlN, the superlattice TiN/AlN multilayer with the 2.9-nm period showed a much lower oxidation tendency than the 16-nm sample.

Original languageEnglish
Pages (from-to)203-207
Number of pages5
JournalThin Solid Films
Volume397
Issue number1-2
DOIs
Publication statusPublished - 2001 Nov 1
Externally publishedYes

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Keywords

  • Auger electron spectroscopy (AES)
  • Oxidation
  • Superlattices
  • TiN/AlN multilayers
  • X-Ray diffraction

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

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