Atmospheric-pressure microwave torch discharge generated gamma-Fe2O3 nanopowder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F13%3A00088100" target="_blank" >RIV/00216224:14310/13:00088100 - isvavai.cz</a>

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 gamma-Fe2O3 nanopowder

Popis výsledku v původním jazyce

Microwave torch discharge ignited in Ar at 1 bar was used for the synthesis of gamma-Fe2O3 nanoparticles. A double-walled nozzle electrode enabled to introduce gases separately: Ar flowed in the central channel, whereas the mixture of H-2/O-2/Fe(CO)(5) was added into the torch discharge through an outer channel. The composition and properties of the synthesized nanopowders were studied by TEM, XRD, Raman and Mossbauer spectroscopies. Basic magnetic measurements at low/high temperatures were performed. The gamma-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 gamma-Fe2O3 powders in the literature. In the transmission Mossbauer spectrum measured at 5 K the two sextets characteristic for gamma-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.

Název v anglickém jazyce

Atmospheric-pressure microwave torch discharge generated gamma-Fe2O3 nanopowder

Popis výsledku anglicky

Microwave torch discharge ignited in Ar at 1 bar was used for the synthesis of gamma-Fe2O3 nanoparticles. A double-walled nozzle electrode enabled to introduce gases separately: Ar flowed in the central channel, whereas the mixture of H-2/O-2/Fe(CO)(5) was added into the torch discharge through an outer channel. The composition and properties of the synthesized nanopowders were studied by TEM, XRD, Raman and Mossbauer spectroscopies. Basic magnetic measurements at low/high temperatures were performed. The gamma-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 gamma-Fe2O3 powders in the literature. In the transmission Mossbauer spectrum measured at 5 K the two sextets characteristic for gamma-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.

Druh

D - Stať ve sborníku

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

10TH INTERNATIONAL CONFERENCE ON SOLID STATE CHEMISTRY

ISBN

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ISSN

1875-3892

e-ISSN

—

Počet stran výsledku

7

Strana od-do

206-212

Název nakladatele

ELSEVIER SCIENCE BV

Místo vydání

AMSTERDAM

Místo konání akce

Pardubice, CZECH REPUBLIC

Datum konání akce

10. 6. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000360747500025