Influence of reactive oxygen species during deposition of iron oxide films by high power impulse magnetron sputtering

0489691 - FZÚ 2019 RIV GB eng J - Journal Article
Straňák, V. - Hubička, Zdeněk - Čada, Martin - Bogdanowicz, R. - Wulff, H. - Helm, C.A. - Hippler, R.
Influence of reactive oxygen species during deposition of iron oxide films by high power impulse magnetron sputtering.
Journal of Physics D-Applied Physics. Roč. 51, č. 9 (2018), s. 1-12, č. článku 095205. ISSN 0022-3727. E-ISSN 1361-6463
R&D Projects: GA ČR GA17-08389S
Institutional support: RVO:68378271
Keywords : high power impulse magnetron sputtering (HiPIMS) * iron oxide thin films * wüstite * magnetite * maghemite * hematite
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.829, year: 2018

Iron oxide films were deposited using high power impulse magnetron sputtering (HiPIMS) of an iron cathode in an argon/oxygen gas mixture at different gas pressures (0.5 Pa, 1.5 Pa, and 5.0 Pa). The HiPIMS system was operated at a repetition frequency f = 100 Hz with a duty cycle of 1%. A main goal is a comparison of film growth during conventional and electron cyclotron wave resonance-assisted HiPIMS. The deposition plasma was investigated by means of optical emission spectroscopy and energy-resolved mass spectrometry. Active oxygen species were detected and their kinetic energy was found to depend on the gas pressure. Deposited films were characterized by means of spectroscopic ellipsometry and grazing incidence x-ray diffraction. Optical properties and crystallinity of as-deposited films were found to depend on the deposition conditions. Deposition of hematite iron oxide films with the HiPIMS-ECWR discharge is attributed to the enhanced production of reactive oxygen species.
Permanent Link: http://hdl.handle.net/11104/0284063