SCHNEEWEISS, O., B. DAVID, Ondřej JAŠEK, Lenka ZAJÍČKOVÁ, M. VONDRACEK, R. ZBORIL and M. MASLAN. Mossbauer Effect Study of Iron Thin Films on Si/SiOx Substrate and Iron Phases at Deposited Carbon Nanotubes. Online. In Tucek, J.; Miglierini, M. MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE - 2010. MELVILLE: AMER INST PHYSICS, 2010, p. 90-95. ISBN 978-0-7354-0806-7. Available from: https://dx.doi.org/10.1063/1.3473904.
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Basic information
Original name Mossbauer Effect Study of Iron Thin Films on Si/SiOx Substrate and Iron Phases at Deposited Carbon Nanotubes
Authors SCHNEEWEISS, O. (guarantor), B. DAVID, Ondřej JAŠEK (203 Czech Republic, belonging to the institution), Lenka ZAJÍČKOVÁ (203 Czech Republic, belonging to the institution), M. VONDRACEK, R. ZBORIL and M. MASLAN.
Edition MELVILLE, MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE - 2010, p. 90-95, 6 pp. 2010.
Publisher AMER INST PHYSICS
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 21100 2.11 Other engineering and technologies
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Publication form electronic version available online
WWW URL
Organization unit Faculty of Science
ISBN 978-0-7354-0806-7
ISSN 0094-243X
Doi http://dx.doi.org/10.1063/1.3473904
UT WoS 000281606200012
Keywords in English Thin films; iron; SiO substrate; carbon nanotubes; Mossbauer effect
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 10/9/2020 10:31.
Abstract
A phase composition of 10 nm thick Fe film placed on the silicon substrate with 200 nm thick SiOx layer after annealing in vacuum and in H-2+CH4 was investigated using Conversion Electron Mossbauer spectroscopy (CEMS). CEMS spectra show that the original iron film was formed by Fe3+ phase. This phase is stable after the annealing in vacuum or in H-2+CH4 below 500 degrees C but formation of phases with Fe2+ and Fe-0 (gamma-Fe and alpha-Fe) was observed after annealing at 500 degrees C and higher temperatures. Formation of fayalite (Fe2SiO4) occurred during vacuum annealing at 700 degrees C. SEM and CEMS study of the sample with grown multiwalled carbon nanotubes shows that the dominating part of iron atoms is present in Fe3C and Fe5C2 carbide phases. Besides their stoichiometric forms, the spectrum components which can be ascribed to the amorphous Fe5-xC2+x carbides, gamma-Fe, and Fe3+ were observed.
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