The magnetic transition in ε-Fe.sub.2./sub.O.sub.3./sub. nanoparticles: magnetic properties and hyperfine interactions from Mössbauer spectroscopy

Kohout, J.; Brázda, Petr; Závěta, K.; Kubániová, D.; Kmječ, T.; Kubíčková, L.; Klementová, Mariana; Šantavá, Eva; Lančok, Adriana

doi:https://dx.doi.org/10.1063/1.4907610

Počet záznamů: 1

The magnetic transition in ε-Fe.sub.2./sub.O.sub.3./sub. nanoparticles: magnetic properties and hyperfine interactions from Mössbauer spectroscopy

1.

SYSNO ASEP	0454302
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	The magnetic transition in ε-Fe₂O₃ nanoparticles: magnetic properties and hyperfine interactions from Mössbauer spectroscopy
Tvůrce(i)	Kohout, J. (CZ) Brázda, Petr (FZU-D)_{RID, ORCID} Závěta, K. (CZ) Kubániová, D. (CZ) Kmječ, T. (CZ) Kubíčková, L. (CZ) Klementová, Mariana (FZU-D)_{RID, ORCID} Šantavá, Eva (FZU-D)_{RID, ORCID} Lančok, Adriana (UACH-T)_{ORCID, RID, SAI}
Zdroj.dok.	Journal of Applied Physics. - : AIP Publishing - ISSN 0021-8979 Roč. 117, č. 17 (2015), "17D505-1"-"17D505-4"
Poč.str.	4 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	ε-Fe₂O₃ ; magnetic transition ; Mössbauer spectroscopy ; X-ray powder diffraction
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
CEP	GAP204/10/0035 GA ČR - Grantová agentura ČR
Institucionální podpora	FZU-D - RVO:68378271 ; UACH-T - RVO:61388980
UT WOS	000354984100386
EID SCOPUS	84923675218
DOI	https://doi.org/10.1063/1.4907610
Anotace	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.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2016

Počet záznamů: 1