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Preparation and Properties of FeCo Nanoparticles
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SYSNO ASEP 0354517 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Preparation and Properties of FeCo Nanoparticles Author(s) Zábranský, Karel (UFM-A)
David, Bohumil (UFM-A) RID
Pizúrová, Naděžda (UFM-A) RID, ORCID
Schneeweiss, Oldřich (UFM-A) RID, ORCID
Zbořil, R. (CZ)
Mašláň, M. (CZ)Number of authors 6 Source Title Mössbauer Spectroscopy in Materials Science - 2010. - Melville, New York : American Institute of Physics, 2010 / Tuček J. ; Miglierini M. - ISSN 0094-243X - ISBN 978-0-7354-0806-7 Pages s. 102-107 Number of pages 6 s. Action MSMS 10 - Mossbauer Spectroscopy in Materials Science 2010 Event date 31.01.2010-05.02.2010 VEvent location Liptovský Ján Country SK - Slovakia Event type WRD Language eng - English Country US - United States Keywords nanocrystalline ; magnetic ; Fe-Co Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects 1M0512 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA106/08/1440 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000281606200014 DOI 10.1063/1.3473884 Annotation Fe-Co nanoparticles were prepared from the binary Fe-Co oxalate. The formation of FeCo metallic phase begun at 290 °C as determined from the X-ray diffraction spectra recorded during heating of the oxalate sample in hydrogen atmosphere. The reduction finished at 500 °C by formation of bcc FeCo phase with the mean particle size of about 50 nm. Analysis of Mössbauer spectra shows that the ferromagnetic FeCo phase is represented by two sextets corresponding to interiors and surfaces of the nanoparticles. In addition to a weak paramagnetic component represented by the doublet which was ascribed to fine particles in superparamagnetic state. The TEM has shown conglomerates of particles with composition about 50 at. % Fe and 50 at. % Co. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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