Thermally Induced Solid-State Route toward Magnetite Nanoparticles with Controlled Stoichiometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F12%3A33141804" target="_blank" >RIV/61989592:15310/12:33141804 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4759475" target="_blank" >http://dx.doi.org/10.1063/1.4759475</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4759475" target="_blank" >10.1063/1.4759475</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermally Induced Solid-State Route toward Magnetite Nanoparticles with Controlled Stoichiometry

Popis výsledku v původním jazyce

Nonstoichiometric magnetites can potentially play significant role in many physical, chemical, and biomedical applications due to their variable and controllable magnetic properties. We carried out thermally induced solid-state preparation of nonstoichiometric magnetites with various degree of stoichiometry using high-temperature reaction chamber of an X-ray powder diffractometer by maghemite reduction by hydrogen gas in the temperature range between 145 and 200 degrees C. Subsequently, the prepared samples were characterized in details by Fe-57 Mossbauer spectroscopy, X-ray powder diffraction, and magnetization measurements. Fe-57 Mossbauer spectroscopy served as a tool for the stoichiometry quantification of the prepared samples comparing the relative areas of subspectra components. Stoichiometry of the prepared magnetite samples varied between 0.31 and 0.45. Cubic (53 wt.%) and tetragonal (47 wt.%) maghemite substructures were identified in X-ray powder diffraction patterns of the p

Název v anglickém jazyce

Thermally Induced Solid-State Route toward Magnetite Nanoparticles with Controlled Stoichiometry

Popis výsledku anglicky

Nonstoichiometric magnetites can potentially play significant role in many physical, chemical, and biomedical applications due to their variable and controllable magnetic properties. We carried out thermally induced solid-state preparation of nonstoichiometric magnetites with various degree of stoichiometry using high-temperature reaction chamber of an X-ray powder diffractometer by maghemite reduction by hydrogen gas in the temperature range between 145 and 200 degrees C. Subsequently, the prepared samples were characterized in details by Fe-57 Mossbauer spectroscopy, X-ray powder diffraction, and magnetization measurements. Fe-57 Mossbauer spectroscopy served as a tool for the stoichiometry quantification of the prepared samples comparing the relative areas of subspectra components. Stoichiometry of the prepared magnetite samples varied between 0.31 and 0.45. Cubic (53 wt.%) and tetragonal (47 wt.%) maghemite substructures were identified in X-ray powder diffraction patterns of the p

Druh

D - Stať ve sborníku

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

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

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the International Conference MSMS-12

ISBN

978-0-7354-1101-2

ISSN

0094-243X

e-ISSN

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Počet stran výsledku

13

Strana od-do

75-87

Název nakladatele

American Institute of Physics

Místo vydání

New York

Místo konání akce

Olomouc

Datum konání akce

11. 6. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000311909900009