Journal of Materials Science

, Volume 32, Issue 5, pp 1305–1312 | Cite as

An XPS and thermogravimetric study of oxidized AlN and AlN–Si3N4 layers deposited by liquid-phase chemical vapour deposition



The results of a comparative study of the resistance to oxidation of AlN and a codeposit of AlN–Si3N4 are presented. The oxidation of both types of layer was performed at 1200°C in an oxygen gas flow (pO2∼1 atm). A thermogravimetric analysis was made, recording the weight gain throughout the oxidation process, and revealed a dramatic improvement in the resistance to oxidation of the codeposit layer when compared with the aluminium nitride layer. An X-ray photoelectron spectroscopy depth-profile analysis was made by performing a series of successive abrasive polishes on the oxidized layers. After each abrasive polish the sample surface was cleaned by ionic bombardment under ultrahigh vacuum and the photoemission spectra recorded. This process of polishing, etching and analysis was continued until the oxygen content decreased to a level comparable with that observed in the layers before oxidation. The changes in chemical bonding throughout the various depth profiles were examined by deconvolution of the Al 2p and Si 2p photoelectron peaks and by analysis of the Auger K L L lines. It was concluded that the slower rate of oxidation of the codeposit could be attributed to either the formation of silica or a mixed oxide phase of the mullite type (3 Al2O3–2SiO2).


Nitride Phase Photoelectron Peak Aluminium Nitride Auger Parameter Abrasive Polishing 


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Copyright information

© Chapman and Hall 1997

Authors and Affiliations

    • 1
    • 2
  1. 1.Institut de Science et genie des Materiaux et ProcedesFont Romeu cedexFrance
  2. 2.LERMPS, IPSeBelfort cedexFrance

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