Novel solid-state synthesis of α-Fe and Fe3O4 nanoparticles embedded in a MgO matrix

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F06%3A00003424" target="_blank" >RIV/61989592:15310/06:00003424 - isvavai.cz</a>

Alternative codes found

RIV/68081723:_____/06:00048592

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Novel solid-state synthesis of α-Fe and Fe3O4 nanoparticles embedded in a MgO matrix

Original language description

Thermally induced reduction of amorphous Fe2O3 nanopowder (2-3 nm) with nanocrystalline Mg (~20 nm) under a hydrogen atmosphere is presented as a novel route to obtain &#945;-Fe and Fe3O4 magnetic nanoparticles dispersed in a MgO matrix. The phase composition, structural and magnetic properties, size and morphology of the nanoparticles were monitored by x-ray diffraction, 57Fe Mössbauer spectroscopy at temperatures of 24-300 K, transmission electron microscopy and magnetic measurements. Spherical magnetite nanoparticles prepared at a reaction temperature of 300 °C revealed a well-defined structure, with a ratio of tetrahedral to octahedral Fe sites of 1/2 being common for the bulk material. A narrow particle size distribution (20-30 nm) and high saturation magnetization (95 +/- 5 A m2 kg-1) predispose the magnetite nanoparticles to various applications, including magnetic separation processes. The Verwey transition of Fe3O4 nanocrystals was found to be decreased to about 80 K. The deep

Czech name

Nová syntéza pevných látek alfa železa and nanočástic Fe3O4 v matrici MgO

Czech description

Nová syntéza pevných látek alfa železa and nanočástic Fe3O4 v matrici MgO

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/1M0512" target="_blank" >1M0512: Research center of powdered nanomaterials</a><br>

Continuities

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

Publication year

2006

Confidentiality

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

Name of the periodical

Nanotechnology

ISSN

0957-4484

e-ISSN

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Volume of the periodical

17

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

607-616

UT code for WoS article

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EID of the result in the Scopus database

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