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study of the oxygen dynamics in a reactive Ar/O-2 high power impulse magnetron sputtering discharge using an ionization region model
University of Paris Saclay, France.
University of Paris Saclay, France; KTH Royal Institute Technology, Sweden; University of Iceland, Iceland.
Linköping University, Department of Physics, Chemistry and Biology, Plasma and Coating Physics. Linköping University, Faculty of Science & Engineering. University of Paris Saclay, France; KTH Royal Institute Technology, Sweden.
KTH Royal Institute Technology, Sweden.
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2017 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 121, no 17, 171917Article in journal (Refereed) Published
Abstract [en]

The oxygen dynamics in a reactive Ar/O-2 high power impulse magnetron sputtering discharge has been studied using a new reactive ionization region model. The aim has been to identify the dominating physical and chemical reactions in the plasma and on the surfaces of the reactor affecting the oxygen plasma chemistry. We explore the temporal evolution of the density of the ground state oxygen molecule O-2(X-1 Sigma(-)(g)), the singlet metastable oxygen molecules O-2(a(1)Delta(g)) and O-2(b(1) Sigma(g)), the oxygen atom in the ground state O(P-3), the metastable oxygen atom O(D-1), the positive ions O-2(+) and O+, and the negative ion O-. We furthermore investigate the reaction rates for the gain and loss of these species. The density of atomic oxygen increases significantly as we move from the metal mode to the transition mode, and finally into the compound (poisoned) mode. The main gain rate responsible for the increase is sputtering of atomic oxygen from the oxidized target. Both in the poisoned mode and in the transition mode, sputtering makes up more than 80% of the total gain rate for atomic oxygen. We also investigate the possibility of depositing stoichiometric TiO2 in the transition mode. Published by AIP Publishing.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2017. Vol. 121, no 17, 171917
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-137838DOI: 10.1063/1.4977817ISI: 000400623700019OAI: oai:DiVA.org:liu-137838DiVA: diva2:1105169
Note

Funding Agencies|Icelandic Research Fund [130029]; Swedish Government Agency [2014-04876]

Available from: 2017-06-02 Created: 2017-06-02 Last updated: 2017-06-02

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CiteExportLink to record
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Citation style
  • apa
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