Original title: Preparation and properties of MgO-Ni(Fe) nanocrystalline composite
Authors: Schneeweiss, Oldřich ; Pizúrová, Naděžda ; Jirásková, Yvonna ; Žák, Tomáš ; Bezdička, Petr ; Večerníková, Eva
Document type: Papers
Conference/Event: International Conference NANO /03./, Brno (CZ), 2003-10-21 / 2003-10-23
Year: 2003
Language: eng
Abstract: 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.
Keywords: composite; nanocrystals; phase composition
Project no.: CEZ:AV0Z4032918 (CEP), CEZ:AV0Z2041904 (CEP), KSK1010104 (CEP), GA202/01/0668 (CEP), OC 523.20
Funding provider: GA AV ČR, GA ČR, GA MŠk
Host item entry: International Conference NANO 03, ISBN 80-214-2527-X

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0075059

Permalink: http://www.nusl.cz/ntk/nusl-26598


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