Název:
Preparation and properties of MgO-Ni(Fe) nanocrystalline composite
Autoři:
Schneeweiss, Oldřich ; Pizúrová, Naděžda ; Jirásková, Yvonna ; Žák, Tomáš ; Bezdička, Petr ; Večerníková, Eva Typ dokumentu: Příspěvky z konference Konference/Akce: International Conference NANO /03./, Brno (CZ), 2003-10-21 / 2003-10-23
Rok:
2003
Jazyk:
eng
Abstrakt: 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.
Klíčová slova:
composite; nanocrystals; phase composition Číslo projektu: CEZ:AV0Z4032918 (CEP), CEZ:AV0Z2041904 (CEP), KSK1010104 (CEP), GA202/01/0668 (CEP), OC 523.20 Poskytovatel projektu: GA AV ČR, GA ČR, GA MŠk Zdrojový dokument: International Conference NANO 03, ISBN 80-214-2527-X
Instituce: Ústav fyziky materiálů AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0075059