The magnetic transition in ε-Fe2O3 nanoparticles: magnetic properties and hyperfine interactions from Mössbauer spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F15%3A00454302" target="_blank" >RIV/61388980:_____/15:00454302 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/15:00454302

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4907610" target="_blank" >http://dx.doi.org/10.1063/1.4907610</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4907610" target="_blank" >10.1063/1.4907610</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The magnetic transition in ε-Fe2O3 nanoparticles: magnetic properties and hyperfine interactions from Mössbauer spectroscopy

Popis výsledku v původním jazyce

The nanoparticles of e-Fe2O3 enriched with 57Fe isotope in amorphous silica matrix were prepared by sol-gel technique starting from a single molecular precursor for both Fe2O3 and silica. From the X-ray powder diffraction pattern e-Fe2O3 was identified as the major phase and a-Fe2O3 and b-Fe2O3 were observed as minor iron oxide phases. Using the log-normal distribution for fitting the experimental data from the TEM micrographs, the characteristic size of particles d0 similar to 25 nm was derived. The rather high coercivity of similar to 2.1 T at room temperature was confirmed for our nanoparticle system. From the de pendences of magnetization on temperature a two-step magnetic transition spread between 100 K and 153 K was indicated.

Název v anglickém jazyce

The magnetic transition in ε-Fe2O3 nanoparticles: magnetic properties and hyperfine interactions from Mössbauer spectroscopy

Popis výsledku anglicky

The nanoparticles of e-Fe2O3 enriched with 57Fe isotope in amorphous silica matrix were prepared by sol-gel technique starting from a single molecular precursor for both Fe2O3 and silica. From the X-ray powder diffraction pattern e-Fe2O3 was identified as the major phase and a-Fe2O3 and b-Fe2O3 were observed as minor iron oxide phases. Using the log-normal distribution for fitting the experimental data from the TEM micrographs, the characteristic size of particles d0 similar to 25 nm was derived. The rather high coercivity of similar to 2.1 T at room temperature was confirmed for our nanoparticle system. From the de pendences of magnetization on temperature a two-step magnetic transition spread between 100 K and 153 K was indicated.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP204%2F10%2F0035" target="_blank" >GAP204/10/0035: Hyperjemné interakce v nanočásticích a nízkodimenzionálních oxidech železa</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

—

Svazek periodika

117

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

"17D505-1"-"17D505-4"

Kód UT WoS článku

000354984100386

EID výsledku v databázi Scopus

2-s2.0-84923675218