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| rdf:type
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| Description
| - Nanočástice na bázi Fe byly syntetizovány metodou laserové pyrolýzy využívající reaktoru, ve kterém záření z CO2 laseru kolmo protíná proud plynové směsi obsahující Fe(CO)5, C2H2 a C2H4. Syntetizovaný prášek byl studován pomocí HRTEM, rtg. difrakce, Mossbauerovy spektroskopie a nízkoteplotních i vysokoteplotních magnetických měření. Syntetizovaný nanoprášek obsahoval alfa-Fe, Fe3O4/gama-Fe2O3 nanočástice v matrici pyrolytického uhlíku. V rtg. difraktogramu se ukázaly jen velmi široké difrakční píky. Velikost krystalitů d_RTG byla odhadnuta za použití Scherrerovy rovnice a byla rovna 1,8 nm pro alfa-Fe a 1,6 nm pro pyrolytický uhlík. Syntetizovaný nanoprášek byl superparamagnetický. Blokovací teplota byla určena ze ZFC křivky a rovnala se 32 K. Mossbauer-Lambův faktor f se při chlazení vzorku z 293 K na 4 K silně měnil. (cs)
- Fe-based nanoparticles were prepared by laser pyrolysis method using a cross-flow reactor in which the CO2 laser radiation orthogonally crosses with the stream of Fe(CO)5, C2H2, and C2H4 gases. The as-synthesised powder was characterised by HRTEM, XRD, Mossbauer spectroscopy, and low- and high- temperature magnetic measurements. The as-synthesised powder consisted of alpha-Fe and Fe3O4/gamma-Fe2O3 nanoparticles embedded in a pyrolytic carbon matrix. The XRD pattern of the sample exhibited broad peaks. The crystallite size d_XRD was estimated using the Scherrer formula and it was 1.8 nm for alpha-Fe and 1.6 nm for pyrolytic carbon. The as-synthesised nanopowder was superparamagnetic. The blocking temperature was determined from the maximum of the ZFC curve and it was 32 K. The Mossbauer-Lamb factor f changed strongly by cooling from 293 K to 4 K.
- Fe-based nanoparticles were prepared by laser pyrolysis method using a cross-flow reactor in which the CO2 laser radiation orthogonally crosses with the stream of Fe(CO)5, C2H2, and C2H4 gases. The as-synthesised powder was characterised by HRTEM, XRD, Mossbauer spectroscopy, and low- and high- temperature magnetic measurements. The as-synthesised powder consisted of alpha-Fe and Fe3O4/gamma-Fe2O3 nanoparticles embedded in a pyrolytic carbon matrix. The XRD pattern of the sample exhibited broad peaks. The crystallite size d_XRD was estimated using the Scherrer formula and it was 1.8 nm for alpha-Fe and 1.6 nm for pyrolytic carbon. The as-synthesised nanopowder was superparamagnetic. The blocking temperature was determined from the maximum of the ZFC curve and it was 32 K. The Mossbauer-Lamb factor f changed strongly by cooling from 293 K to 4 K. (en)
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| Title
| - Magnetic properties of nanometeric Fe-based particles obtained by laser-driven pyrolysis
- Magnetické vlastnosti nanometrických částic na bázi Fe získaných laserovou pyrolýzou plynné směsi (cs)
- Magnetic properties of nanometeric Fe-based particles obtained by laser-driven pyrolysis (en)
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| skos:prefLabel
| - Magnetic properties of nanometeric Fe-based particles obtained by laser-driven pyrolysis
- Magnetické vlastnosti nanometrických částic na bázi Fe získaných laserovou pyrolýzou plynné směsi (cs)
- Magnetic properties of nanometeric Fe-based particles obtained by laser-driven pyrolysis (en)
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| skos:notation
| - RIV/61388980:_____/07:00096469!RIV08-GA0-61388980
|
| http://linked.open.../vavai/riv/strany
| |
| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA202/04/0221), Z(AV0Z10100520), Z(AV0Z20410507), Z(AV0Z40320502)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388980:_____/07:00096469
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - iron-based nanoparticles; laser pyrolysis; Mossbauer spectroscopy; magnetic properties (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| - Journal of Physics and Chemistry of Solids
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - David, Bohumil
- Klementová, Mariana
- Schneeweiss, Oldřich
- Šantavá, Eva
- Pizúrová, Naděžda
- Morjan, I.
- Alexandrescu, R.
- Dumitrache, F.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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