Nanomechanical properties of AlN(1 0 3) thin films by nanoindentation

Sheng Rui Jian, Guo Ju Chen, Jason S.C. Jang, Yi Shao Lai

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

In this study, the crystalline structure, surface roughness and nanomechanical properties of AlN thin films are investigated by using X-ray diffraction (XRD), atomic force microscopy (AFM) and nanoindentation techniques. The AlN thin films were deposited on Si(1 0 0) substrates with various sputtering powers by means of the radio frequency (RF) magnetron sputtering system. XRD results show that the crystalline structures and orientations of the AlN thin films have the strong (1 0 3) orientations. Both of the average grain size and surface roughness of AlN(1 0 3) thin films exhibit an increasing trend with the sputtering power. In addition, the hardness and Young's modulus of AlN(1 0 3) thin films increased as the sputtering power increased from 150 to 350 W, with the larger results being obtained at 350 W.

Original languageEnglish
Pages (from-to)219-222
Number of pages4
JournalJournal of Alloys and Compounds
Volume494
Issue number1-2
DOIs
StatePublished - 2 Apr 2010

Keywords

  • AFM
  • AlN thin films
  • Hardness
  • Nanoindentation
  • XRD

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