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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F10%3A00354295%21RIV11-MSM-68081723
rdf:type
n15:Vysledek skos:Concept
dcterms:description
Two samples of nanopowders containing superparamagnetic Fe3C and Fe3O4/gamma-Fe2O3 particles and carbon black were synthesized by the method of laser-induced homogeneous pyrolysis of gaseous precursors. Both were characterized by XRD, HR-TEM, Mössbauer spectrometry and standard magnetic measurements. The mean crystallite size of Fe3C was 3 nm for the first sample and 10 nm for the second sample. Fe3C phase in both samples exhibited reduced Curie temperature and smeared ferromagnetic-paramagnetic transition. After annealing of the samples at 800°C for 30min the Curie temperature of the recrystallized Fe3C phase in both samples was 214°C (standard bulk value). Two samples of nanopowders containing superparamagnetic Fe3C and Fe3O4/gamma-Fe2O3 particles and carbon black were synthesized by the method of laser-induced homogeneous pyrolysis of gaseous precursors. Both were characterized by XRD, HR-TEM, Mössbauer spectrometry and standard magnetic measurements. The mean crystallite size of Fe3C was 3 nm for the first sample and 10 nm for the second sample. Fe3C phase in both samples exhibited reduced Curie temperature and smeared ferromagnetic-paramagnetic transition. After annealing of the samples at 800°C for 30min the Curie temperature of the recrystallized Fe3C phase in both samples was 214°C (standard bulk value).
dcterms:title
Nanopowders with superparamagnetic Fe3C particles and their annealing behaviour Nanopowders with superparamagnetic Fe3C particles and their annealing behaviour
skos:prefLabel
Nanopowders with superparamagnetic Fe3C particles and their annealing behaviour Nanopowders with superparamagnetic Fe3C particles and their annealing behaviour
skos:notation
RIV/68081723:_____/10:00354295!RIV11-MSM-68081723
n3:aktivita
n11:Z n11:P
n3:aktivity
P(1M0512), P(GA202/08/0178), Z(AV0Z20410507)
n3:cisloPeriodika
6-7
n3:dodaniDat
n13:2011
n3:domaciTvurceVysledku
n7:3246523 n7:6329446 n7:4343883
n3:druhVysledku
n12:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
273634
n3:idVysledku
RIV/68081723:_____/10:00354295
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Fe3C; nanocomposite; magnetic measurements; Mössbauer spectroscopy; superparamagnetism
n3:klicoveSlovo
n5:magnetic%20measurements n5:superparamagnetism n5:Fe3C n5:nanocomposite n5:M%C3%B6ssbauer%20spectroscopy
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[160499DDF7BE]
n3:nazevZdroje
Surface and Interface Analysis
n3:obor
n18:BM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
6
n3:projekt
n9:GA202%2F08%2F0178 n9:1M0512
n3:rokUplatneniVysledku
n13:2010
n3:svazekPeriodika
42
n3:tvurceVysledku
Fleaca, C. Pizúrová, Naděžda Dumitrache, F. Schneeweiss, Oldřich Alexandrescu, R. David, Bohumil
n3:wos
000281149700054
n3:zamer
n16:AV0Z20410507
s:issn
0142-2421
s:numberOfPages
4