Atmospheric-pressure microwave torch discharge generated ?-Fe2O3 nanopowder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00421345" target="_blank" >RIV/68378271:_____/13:00421345 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/13:00421345

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.phpro.2013.04.025" target="_blank" >http://dx.doi.org/10.1016/j.phpro.2013.04.025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.phpro.2013.04.025" target="_blank" >10.1016/j.phpro.2013.04.025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Atmospheric-pressure microwave torch discharge generated ?-Fe2O3 nanopowder

Popis výsledku v původním jazyce

Microwave torch discharge ignited in Ar at 1 bar was used for the synthesis of ?-Fe2O3 nanoparticles. A double-walled nozzle electrode enabled to introduce gases separately: Ar flowed in the central channel, whereas the mixture of H2/O2/Fe(CO)5 was addedinto the torch discharge through an outer channel. The composition and properties of the synthesized nanopowders were studied by TEM, XRD, Raman and Mössbauer spectroscopies. Basic magnetic measurements at low/high temperatures were performed. The ?-Fe2O3 phase with the mean crystallite size of 24 nm was identified by XRD in the representative sample. The measured Raman spectrum matched well those reported for ?-Fe2O3 powders in the literature. In the transmission Mössbauer spectrum measured at 5 K thetwo sextets characteristic for ? Fe2O3 were clearly identified. No change in specific magnetic moment typical of Fe3O4 at its Verwey temperature was observed on the zero field curve, which smoothly increased with temperature. Neither Fe3

Název v anglickém jazyce

Atmospheric-pressure microwave torch discharge generated ?-Fe2O3 nanopowder

Popis výsledku anglicky

Microwave torch discharge ignited in Ar at 1 bar was used for the synthesis of ?-Fe2O3 nanoparticles. A double-walled nozzle electrode enabled to introduce gases separately: Ar flowed in the central channel, whereas the mixture of H2/O2/Fe(CO)5 was addedinto the torch discharge through an outer channel. The composition and properties of the synthesized nanopowders were studied by TEM, XRD, Raman and Mössbauer spectroscopies. Basic magnetic measurements at low/high temperatures were performed. The ?-Fe2O3 phase with the mean crystallite size of 24 nm was identified by XRD in the representative sample. The measured Raman spectrum matched well those reported for ?-Fe2O3 powders in the literature. In the transmission Mössbauer spectrum measured at 5 K thetwo sextets characteristic for ? Fe2O3 were clearly identified. No change in specific magnetic moment typical of Fe3O4 at its Verwey temperature was observed on the zero field curve, which smoothly increased with temperature. Neither Fe3

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics Procedia

ISSN

1875-3892

e-ISSN

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Svazek periodika

44

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

206-212

Kód UT WoS článku

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EID výsledku v databázi Scopus

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