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TEM characterization of W-O-N coatings

Parreira, N.M.G., Pei, Y.T., Galvan, D., Polcar, T., De Hosson, J.Th.M. and Cavaleiro, A. (2008) TEM characterization of W-O-N coatings Microscopy and Microanalysis, 14, (S3), pp. 27-30. (doi:10.1017/S1431927608089289).

Record type: Article


Recently, a new class of coatings based on oxynitrides has drawn much attention in the research field as well as in industrial applications, as shown by either the large numbers of recent publications on TM O N systems (TM—transition metal) such as Ti-O-N, Zr-O-N and Ta-O-N, or the development of Si O-N for opto-electronic devices. The properties of these coatings are related to the chemical composition and the structural arrangement. However, the knowledge about the structure of TM-O-N systems is very limited, especially how the structural arrangement of the non-metallic elements is in the lattices. To the best of our knowledge, only a few studies exist on the development of structural models for oxynitrides, based on XRD and/or XPS analysis, as e.g. Si-O-N and Ti-O-N, or on Mössbauer spectrometry for Fe-O-N. TEM was used scarcely for the characterization of TM-O-N coatings possibly due to the damage of the structure by the electron-irradiation as it is reported for Cr-O-N. This work is aimed at the crystallographic understanding of W-O-N sputtered films by using TEM and HR TEM techniques for complementing the information provided by XRD characterization.

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Published date: 2008
Organisations: nCATS Group


Local EPrints ID: 199799
ISSN: 1431-9276
PURE UUID: e8cf14f7-3951-4896-8d25-b92c799fe78e
ORCID for T. Polcar: ORCID iD

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Date deposited: 20 Oct 2011 12:53
Last modified: 18 Jul 2017 11:15

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Author: N.M.G. Parreira
Author: Y.T. Pei
Author: D. Galvan
Author: T. Polcar ORCID iD
Author: J.Th.M. De Hosson
Author: A. Cavaleiro

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