Understanding the discharge current behavior in reactive high power impulse magnetron sputtering of oxidesShow others and affiliations
2013 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 113, no 13, p. 133302-Article in journal (Refereed) Published
Abstract [en]
The discharge current behavior in reactive high power impulse magnetron sputtering (HiPIMS) of Ti-O and Al-O is investigated. It is found that for both metals, the discharge peak current significantly increases in the oxide mode in contrast to the behavior in reactive direct current magnetron sputtering where the discharge current increases for Al but decreases for Ti when oxygen is introduced. In order to investigate the increase in the discharge current in HiPIMS-mode, the ionic contribution of the discharge in the oxide and metal mode is measured using time-resolved mass spectrometry. The energy distributions and time evolution are investigated during the pulse-on time as well as in the post-discharge. In the oxide mode, the discharge is dominated by ionized oxygen, which has been preferentially sputtered from the target surface. The ionized oxygen determines the discharge behavior in reactive HiPIMS.
Place, publisher, year, edition, pages
2013. Vol. 113, no 13, p. 133302-
Keywords [en]
Electron-Emission, Energy, Bombardment, Simulation
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-122094DOI: 10.1063/1.4799199ISI: 000317238000006Scopus ID: 2-s2.0-84880692869OAI: oai:DiVA.org:kth-122094DiVA, id: diva2:622015
Funder
Swedish Research Council, 621-2011-4280EU, FP7, Seventh Framework Programme, 286697
Note
QC 20130520
2013-05-202013-05-132022-06-24Bibliographically approved