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High power impulse magnetron sputtering discharge
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
2012 (English)In: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films, ISSN 0734-2101, E-ISSN 1520-8559, Vol. 30, no 3, 030801- p.Article, review/survey (Refereed) Published
Abstract [en]

The high power impulse magnetron sputtering (HiPIMS) discharge is a recent addition to plasma based sputtering technology. In HiPIMS, high power is applied to the magnetron target in unipolar pulses at low duty cycle and low repetition frequency while keeping the average power about 2 orders of magnitude lower than the peak power. This results in a high plasma density, and high ionization fraction of the sputtered vapor, which allows better control of the film growth by controlling the energy and direction of the deposition species. This is a significant advantage over conventional dc magnetron sputtering where the sputtered vapor consists mainly of neutral species. The HiPIMS discharge is now an established ionized physical vapor deposition technique, which is easily scalable and has been successfully introduced into various industrial applications. The authors give an overview of the development of the HiPIMS discharge, and the underlying mechanisms that dictate the discharge properties. First, an introduction to the magnetron sputtering discharge and its various configurations and modifications is given. Then the development and properties of the high power pulsed power supply are discussed, followed by an overview of the measured plasma parameters in the HiPIMS discharge, the electron energy and density, the ion energy, ion flux and plasma composition, and a discussion on the deposition rate. Finally, some of the models that have been developed to gain understanding of the discharge processes are reviewed, including the phenomenological material pathway model, and the ionization region model.

Place, publisher, year, edition, pages
2012. Vol. 30, no 3, 030801- p.
Keyword [en]
Physical Vapor-Deposition, Energy-Distribution-Functions, Electron-Cyclotron-Resonance, Cell/Monte Carlo Simulation, Planar Magnetron, Low-Pressure, Thin-Films, Ion Energy, Plasma Parameters, Hipims Discharge
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-98020DOI: 10.1116/1.3691832ISI: 000303602800003ScopusID: 2-s2.0-84864265583OAI: diva2:535012
QC 20120619Available from: 2012-06-19 Created: 2012-06-18 Last updated: 2012-06-19Bibliographically approved

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Brenning, Nils
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