Characterization of magnetron sputtered rhodium films for reflective coatings

Marot, L.; Temmerman, G. De; Thommen, V.; Mathys, Daniel; Oelhafen, P.

doi:10.1016/j.surfcoat.2007.10.014

Cited by 54 publications

(58 citation statements)

References 24 publications

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“…For deposition at elevated temperatures it is observed that the grain size (individual grains forming columnar crystallites), calculated from Scherrer's formula [15], is larger in comparison to RT depositions. For rhodium films an identical phenomenon has been observed [6]. No effect of deposited thickness (ranging from 40 to 670 nm), deposition rate (ranging from 0.1 to 0.7Å/s) and substrate material is observed on the grain structure, surface morphology or reflectivity.…”

Section: Evaporated Molybdenum Filmssupporting

confidence: 69%

“…3, curve) [5]. Depositions of molybdenum by magnetron sputtering yield a grain size (Table 1) comparable to Rh films deposited by the same technique [6]. Similar structural and optical results are obtained for depositions at a lower working pressure (0.75 Pa).…”

Section: Magnetron Sputtered Molybdenum Filmsmentioning

confidence: 58%

“…A complete characterisation of the Rh films deposited by magnetron sputtering has been published elsewhere [6]. The films were characterised chemically, structurally and optically.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reflective metallic coatings for first mirrors on ITER

Eren

Marot

Litnovsky

et al. 2011

Fusion Engineering and Design

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Section: Evaporated Molybdenum Filmssupporting

confidence: 69%

Section: Magnetron Sputtered Molybdenum Filmsmentioning

confidence: 58%

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Reflective metallic coatings for first mirrors on ITER

Eren

Marot

Litnovsky

et al. 2011

Fusion Engineering and Design

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“…The test in 2008-2009 was performed with 32 mirrors made of polycrystalline molybdenum (Mo-poly) including four specimens coated with a 1 µm thick layer of rhodium (Rh). The coating was obtained by magnetron sputtering, as described in [7,8].…”

Section: Experimental Details: Exposure and Analysesmentioning

confidence: 99%

Overview of the second stage in the comprehensive mirrors test in JET

et al. 2011

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The first mirror test for ITER in JET with carbon walls has been completed. Thirty polycrystalline Mo mirrors including four coated with a 1 µm rhodium (Rh) film were exposed to plasma in the divertor region and in the main chamber. The mirrors were installed in eight cassettes of pan-pipe shape. The reflectivity of all mirrors exposed in the divertor has been degraded by 80-90% because of the formation of thick (>20 µm) flaking co-deposits on surfaces. Only small reflectivity losses (5-10%) occurred on mirrors located at the channel mouth of the cassettes from the main chamber wall. This is due to the in situ removal of deposited species by charge exchange neutrals. Deuterium, 12 C and 9 Be are the main isotopes detected on surfaces, but other isotopes ( 13 C) are also found in some locations, thus indicating differences in the material migration. Rhodium coatings with an initial reflectivity that is 30% better than that of pure Mo survived the test without detachment, but their resultant reflectivity was the same as that of the exposed Mo surfaces.

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“…Rhodium thin films prepared by electron-beam evaporation (Masek et al 1995), chemical vapor deposition (Bhaskar et al 2008;James et al 2005), electrochemical deposition (Lin et al 2002), DC and RF magnetron sputtering technique (Marot et al 2008b) are well documented in literature. There are few reports on the Rh thin films fabricated via pulsed laser deposition (PLD) technique (Drogoff et al 1999;Saidani et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Effect of target–substrate distance onto the nanostructured rhodium thin films via PLD technique

Mostako

Khare

2012

Appl Nanosci

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Rhodium thin films on highly polished stainless steel substrates were fabricated via pulsed laser deposition (PLD) technique. The PLD films of rhodium were observed to be preferentially oriented in Rh(111) plane. The films showed dense columnar structure of nanometric crystallites. The effects of target-substrate distance onto the root mean square roughness, crystal structure, reflectivity and thickness of the PLD rhodium films were investigated.

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Characterization of magnetron sputtered rhodium films for reflective coatings

Cited by 54 publications

References 24 publications

Reflective metallic coatings for first mirrors on ITER

Reflective metallic coatings for first mirrors on ITER

Overview of the second stage in the comprehensive mirrors test in JET

Effect of target–substrate distance onto the nanostructured rhodium thin films via PLD technique

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