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Electron interactions with the heteronuclear carbonyl precursor H2FeRu3(CO)13 and comparison with HFeCo3(CO)12: from fundamental gas phase and surface science studies to focused electron beam induced deposition

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author P, Ragesh Kumar T
dc.contributor.author Weirich, Paul
dc.contributor.author Hrachowina, Lukas
dc.contributor.author Hanefeld, Marc
dc.contributor.author Bjornsson, Ragnar
dc.contributor.author Hróðmarsson, Helgi Rafn
dc.contributor.author Barth, Sven
dc.contributor.author Fairbrother, D Howard
dc.contributor.author Huth, Michael
dc.contributor.author Ingólfsson, Oddur
dc.date.accessioned 2018-07-27T11:13:25Z
dc.date.available 2018-07-27T11:13:25Z
dc.date.issued 2018-02-14
dc.identifier.citation P, R. K. T.; Weirich, P.; Hrachowina, L.; Hanefeld, M.; Bjornsson, R.; Hrodmarsson, H. R.; Barth, S.; Fairbrother, D. H.; Huth, M.; Ingólfsson, O. Beilstein J. Nanotechnol. 2018, 9, 555–579. doi:10.3762/bjnano.9.53
dc.identifier.issn 2190-4286
dc.identifier.uri https://hdl.handle.net/20.500.11815/748
dc.description.abstract In the current contribution we present a comprehensive study on the heteronuclear carbonyl complex H2FeRu3(CO)13 covering its low energy electron induced fragmentation in the gas phase through dissociative electron attachment (DEA) and dissociative ionization (DI), its decomposition when adsorbed on a surface under controlled ultrahigh vacuum (UHV) conditions and exposed to irradiation with 500 eV electrons, and its performance in focused electron beam induced deposition (FEBID) at room temperature under HV conditions. The performance of this precursor in FEBID is poor, resulting in maximum metal content of 26 atom % under optimized conditions. Furthermore, the Ru/Fe ratio in the FEBID deposit (≈3.5) is higher than the 3:1 ratio predicted. This is somewhat surprising as in recent FEBID studies on a structurally similar bimetallic precursor, HFeCo3(CO)12, metal contents of about 80 atom % is achievable on a routine basis and the deposits are found to maintain the initial Co/Fe ratio. Low temperature (≈213 K) surface science studies on thin films of H2FeRu3(CO)13 demonstrate that electron stimulated decomposition leads to significant CO desorption (average of 8–9 CO groups per molecule) to form partially decarbonylated intermediates. However, once formed these intermediates are largely unaffected by either further electron irradiation or annealing to room temperature, with a predicted metal content similar to what is observed in FEBID. Furthermore, gas phase experiments indicate formation of Fe(CO)4 from H2FeRu3(CO)13 upon low energy electron interaction. This fragment could desorb at room temperature under high vacuum conditions, which may explain the slight increase in the Ru/Fe ratio of deposits in FEBID. With the combination of gas phase experiments, surface science studies and actual FEBID experiments, we can offer new insights into the low energy electron induced decomposition of this precursor and how this is reflected in the relatively poor performance of H2FeRu3(CO)13 as compared to the structurally similar HFeCo3(CO)12.
dc.description.sponsorship The authors acknowledge the fruitful and productive environment provided by the COST Action CELINA CM1301 and we would like to take the opportunity to extend our thanks to Prof. Petra Swiderek for running this Action exceptionally well. Marc Hanefeld and Michael Huth acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) through Priority Program SPP 1928, project HU 752/12-1. DHF thanks the National Science Foundation for support of this work through the linked collaborative grants CHE-1607621 and CHE-1607547. OI acknowledges supported from the Icelandic Center of Research (RANNIS) Grant No. 13049305(1-3) and the University of Iceland Research Fund. RKTP acknowledges a doctoral grant from the University of Iceland Research Fund and financial support from the COST Action CM1301; CELINA, for short term scientific missions (STSMs).
dc.format.extent 555-579
dc.language.iso en
dc.publisher Beilstein Institut
dc.relation.ispartofseries Beilstein Journal of Nanotechnology;9
dc.rights info:eu-repo/semantics/openAccess
dc.subject Dissociative electron attachment
dc.subject Dissociative ionization
dc.subject Electron induced deposition
dc.subject Electron molecule interaction
dc.subject Focused electron beam induced deposition
dc.subject Heteronuclear FEBID precursors
dc.subject Surface science
dc.subject Efnafræði
dc.subject Rafeindir
dc.title Electron interactions with the heteronuclear carbonyl precursor H2FeRu3(CO)13 and comparison with HFeCo3(CO)12: from fundamental gas phase and surface science studies to focused electron beam induced deposition
dc.type info:eu-repo/semantics/article
dcterms.license This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.description.version Peer Reviewed
dc.identifier.journal Beilstein Journal of Nanotechnology
dc.identifier.doi 10.3762/bjnano.9.53
dc.relation.url https://www.beilstein-journals.org/bjnano/articles/9/53
dc.contributor.department Raunvísindastofnun (HÍ)
dc.contributor.department Science Institute (UI)
dc.contributor.department Raunvísindadeild (HÍ)
dc.contributor.department Faculty of Physical Sciences (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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