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epsilon-Fe2O3 nanoparticles synthesized in atmospheric-pressure microwave torch

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DAVID Bohumil PIZÚROVÁ Naděžda SYNEK Petr KUDRLE Vít JAŠEK Ondřej SCHNEEWEISS Oldřich

Rok publikování 2014
Druh Článek v odborném periodiku
Časopis / Zdroj Materials Letters
Fakulta / Pracoviště MU

Středoevropský technologický institut

Citace
www http://ac.els-cdn.com/S0167577X13015838/1-s2.0-S0167577X13015838-main.pdf?_tid=94a14ace-cd43-11e4-958b-00000aacb360&acdnat=1426665266_399e607ceb9d6ceca572da648f05aba9
Doi http://dx.doi.org/10.1016/j.matlet.2013.11.057
Obor Fyzika plazmatu a výboje v plynech
Klíčová slova epsilon-Fe2O3; Nanoparticles; Microwave plasma; Mössbauer spectroscopy
Přiložené soubory
Popis The article reports on epsilon-Fe2O3 nanoparticles synthesized in a single step by atmospheric-pressure microwave torch discharge using gaseous precursors only. Morphology and composition of the as-synthesized nanopowder were studied by HR-TEM, XRD, and Mossbauer spectroscopy. In the studied nanopowder, epsilon-Fe2O3 phase (d(xRD)=25 nm, 32 wt%) together with alpha-Fe2O3 and gamma-Fe2O3 phases was found. The characteristic epsilon-Fe2O3 and alpha/gamma-Fe2O3 sextets in the Mossbauer spectra measured at 293 and 5 K confirmed the phase composition of the powder. Compared with the methods currently used for the synthesis of epsilon-Fe2O3 nanoparticles, atmospheric-pressure microwave torch discharge appears as a new synthesis route for obtaining epsilon-Fe2O3 nanoparticles. (C) 2013 Elsevier B.V. All rights reserved.
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