[en] In this work, the direct current (DC) hot magnetron sputtering (HMS) of Nb has been studied and compared with the conventional cold magnetron sputtering (CMS) discharge. Particularly, these two magnetron systems were investigated in terms of current–voltage trends, behaviour of spectral lines, target temperature, and deposition rate. The current–voltage evolution showing strong variations over time in the HMS system was used to monitor the moment when thermionic emission becomes considerable. Meanwhile, thanks to the time-resolved optical emission spectroscopy (OES), the dynamics of plasma particles and the population of their electronic levels were analysed as a function of the target temperature. The target temperature was measured owing to both pyrometry and OES-based approach, i.e. by fitting an emission spectrum baseline. Finally, in the HMS configuration used in this work, the deposition rate up to 100 nm min−1 was obtained at the applied power density of 30 W cm−2, which is three times higher than the maximum power density applicable to the classical CMS system. However, with further increase in the power density, the deposition rate values were found to be saturated, which is likely caused by a significant increment in a number of thermal electrons in the discharge area.
Research center :
CIRMAP - Centre d'Innovation et de Recherche en Matériaux Polymères
Disciplines :
Physics
Author, co-author :
Leonova, Kseniia ; Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Name of the research project :
4391 - PONAMP - Product Optimisation with New Additive Manufacturing Powders - Région wallonne 5397 - FRIA1-Leonova - RESOLUTION - Fédération Wallonie Bruxelles
Funders :
Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture Collective Research Networking
Funding number :
FC 41423; No. 1810199
Funding text :
K Leonova is thankful to the National Fund for Scientific Research (FNRS) within FRIA (Fund for Research training in Industry and Agriculture) Grant FC 41423. S Konstantinidis is a Senior Research Associate of the FNRS. The authors are also thankful for funding through the Collective Research Networking (CORNET) via the project ‘Products Optimization with New Additive Manufacturing Powders—PONAMP (No. 1810199).
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