Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/2154
Title: Reactive magnetron cosputtering of hard and conductive ternary nitride thin films: Ti–Zr–N and Ti–Ta–N
Authors: Abadias, Gregory 
Dub, Sergey N. 
Koutsokeras, Loukas E. 
Major Field of Science: Engineering and Technology
Field Category: Materials Engineering
Keywords: Titanium nitride;Magnetron sputtering;Ion plating
Issue Date: Jul-2010
Source: Journal of vacuum science and technology A, 2010, vol. 28, no. 4, pp. 541-551
Volume: 28
Issue: 4
Start page: 541
End page: 551
Journal: Journal of Vacuum Science & Technology A 
Abstract: Ternary transition metal nitride thin films, with thickness up to 300 nm, were deposited by dc reactive magnetron cosputtering in Ar- N2 plasma discharges at 300 °C on Si substrates. Two systems were comparatively studied, Ti-Zr-N and Ti-Ta-N, as representative of isostructural and nonisostructural prototypes, with the aim of characterizing their structural, mechanical, and electrical properties. While phase-separated TiN-ZrN and TiN-TaN are the bulk equilibrium states, Ti1-x Zrx N and Ti 1-y Tay N solid solutions with the Na-Cl (B1 -type) structure could be stabilized in a large compositional range (up to x=1 and y=0.75, respectively). Substituting Ti atoms by either Zr or Ta atoms led to significant changes in film texture, microstructure, grain size, and surface morphology, as evidenced by x-ray diffraction, x-ray reflectivity, and scanning electron and atomic force microscopies. The ternary Ti1-y Ta y N films exhibited superior mechanical properties to Ti 1-x Zrx N films as well as binary compounds, with hardness as high as 42 GPa for y=0.69. All films were metallic, the lowest electrical resistivity ρ ∼65 μΩ cm being obtained for pure ZrN, while for Ti1-y Tay N films a minimum was observed at y∼0.3. The evolution of the different film properties is discussed based on microstructrural investigations
URI: https://hdl.handle.net/20.500.14279/2154
ISSN: 15208559
DOI: 10.1116/1.3426296
Rights: © American Vacuum Society
Type: Article
Affiliation: University of Ioannina 
Affiliation : University Poitiers 
University of Ioannina 
NAS of Ukraine 
Kharkiv Institute of Physics and Technology 
CEMHTI 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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