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Preparation and properties of MgO-Ni(Fe) nanocrystalline composite
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SYSNO ASEP 0178170 Document Type K - Proceedings Paper (Czech conf.) R&D Document Type Conference Paper Title Preparation and properties of MgO-Ni(Fe) nanocrystalline composite Author(s) Schneeweiss, Oldřich (UFM-A) RID, ORCID
Pizúrová, Naděžda (UFM-A) RID, ORCID
Jirásková, Yvonna (UFM-A) RID, ORCID
Žák, Tomáš (UFM-A) RID
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Večerníková, Eva (UACH-T) SAISource Title International Conference NANO 03 / Šandera P.. - Brno : VUT Brno, FSI, 2003 - ISBN 80-214-2527-X
s. 186-189Number of pages 4 s. Action International Conference NANO /03./ Event date 21.10.2003-23.10.2003 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords nanocrystals ; composite ; phase composition Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects KSK1010104 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA202/01/0668 GA ČR - Czech Science Foundation (CSF) OC 523.20 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z4032918 - UACH-T AV0Z2041904 - UFM-A Annotation We have prepared MgO-Ni(Fe) nanocrystalline composites by controlled heat treatment of compacted spark synthesized nanocrystalline powders. Besides particle sizes and their chemical compositions, influence of interaction with surrounding atmosphere and adsorbed gases on phase composition and magnetic properties were investigated. Mössbauer spectroscopy, x-ray diffraction and TEM were used for phase analysis. Thermomagnetic curves and DTA/TG measurements were applied for detection of changes in structure and phase composition during heat treatments. The simultaneous gas analysis using mass spectroscopy by heating yielded information on adsorbed and dissolved gases and their reactions with the nanoparticles. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2004
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