Stabilization of the high coercivity ?-Fe2O3 phase in the CeO2-Fe2O3/SiO22 nanocomposites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00385566" target="_blank" >RIV/68378271:_____/12:00385566 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jssc.2012.03.022" target="_blank" >http://dx.doi.org/10.1016/j.jssc.2012.03.022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jssc.2012.03.022" target="_blank" >10.1016/j.jssc.2012.03.022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stabilization of the high coercivity ?-Fe2O3 phase in the CeO2-Fe2O3/SiO22 nanocomposites

Popis výsledku v původním jazyce

We have investigated the processes leading to the formation of the Fe2O3 and CeO2 nanoparticles in the SiO2 matrix in order to stabilize the ?-Fe2 O3 as the major phase. The samples with two different concentrations of the Fe were prepared by sol?gel method, subsequently annealed at different temperatures up to 1100°C, and characterized by the Mössbauer spectroscopy, Transmission Electron Microscopy (TEM), Powder X-ray Diffraction (PXRD), Energy Dispersive X-ray analysis (EDX) and magnetic measurements.The evolution of the different Fe2O3 phases under various conditions of preparation was investigated, starting with the preferential appearance of the ? phase for the sample with low Fe concentration and lowe annaling temperature and stabilization of the major ? phase for high Fe concentration and high annealing temperature, coexisting with the most stable ? phase.

Název v anglickém jazyce

Stabilization of the high coercivity ?-Fe2O3 phase in the CeO2-Fe2O3/SiO22 nanocomposites

Popis výsledku anglicky

We have investigated the processes leading to the formation of the Fe2O3 and CeO2 nanoparticles in the SiO2 matrix in order to stabilize the ?-Fe2 O3 as the major phase. The samples with two different concentrations of the Fe were prepared by sol?gel method, subsequently annealed at different temperatures up to 1100°C, and characterized by the Mössbauer spectroscopy, Transmission Electron Microscopy (TEM), Powder X-ray Diffraction (PXRD), Energy Dispersive X-ray analysis (EDX) and magnetic measurements.The evolution of the different Fe2O3 phases under various conditions of preparation was investigated, starting with the preferential appearance of the ? phase for the sample with low Fe concentration and lowe annaling temperature and stabilization of the major ? phase for high Fe concentration and high annealing temperature, coexisting with the most stable ? phase.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of Solid State Chemistry

ISSN

0022-4596

e-ISSN

—

Svazek periodika

191

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

136-141

Kód UT WoS článku

000305670700020

EID výsledku v databázi Scopus

—