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Description
| - Two nanopowders synth. in microwave plasma:the first one in a torch discharge at 1 bar,the second one in low-pressure plasma at 40 mbar. Morphology, composition and properties studied by TEM, XRD, Raman and Mössbauer spectra, magnetic meas.. By XRD only gamma- Fe2O3 identified (mean crystallite size dXRD 24 nm for the first and 13 nm for the second one). From the Mössbauer spectra meas.at 5 K, no other iron oxide phases found in both samples. Unusually strong temp. dependence of the Lamb-Mössbauer factor observed: ISA(5 K)/ISA(293 K)=6 in the case of the first sample and ISA(5 K)/ISA(293 K)=22 for the second sample (ISA denotes integral spectrum area),which explained as the consequence of the reduced clump of electrically charged nanoparticles in the plasma, i.e., particles can either move at 293 K (when they are free) or tilt (if they are a chain part). No superparamagnetic phase at 293 K by Mössbauer spectra of both samples.
- Two nanopowders synth. in microwave plasma:the first one in a torch discharge at 1 bar,the second one in low-pressure plasma at 40 mbar. Morphology, composition and properties studied by TEM, XRD, Raman and Mössbauer spectra, magnetic meas.. By XRD only gamma- Fe2O3 identified (mean crystallite size dXRD 24 nm for the first and 13 nm for the second one). From the Mössbauer spectra meas.at 5 K, no other iron oxide phases found in both samples. Unusually strong temp. dependence of the Lamb-Mössbauer factor observed: ISA(5 K)/ISA(293 K)=6 in the case of the first sample and ISA(5 K)/ISA(293 K)=22 for the second sample (ISA denotes integral spectrum area),which explained as the consequence of the reduced clump of electrically charged nanoparticles in the plasma, i.e., particles can either move at 293 K (when they are free) or tilt (if they are a chain part). No superparamagnetic phase at 293 K by Mössbauer spectra of both samples. (en)
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Title
| - gamma-Fe2O3 nanopowders synthesized in microwave plasma and extraordinarily strong temperature influence on their Mössbauer spectra
- gamma-Fe2O3 nanopowders synthesized in microwave plasma and extraordinarily strong temperature influence on their Mössbauer spectra (en)
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skos:prefLabel
| - gamma-Fe2O3 nanopowders synthesized in microwave plasma and extraordinarily strong temperature influence on their Mössbauer spectra
- gamma-Fe2O3 nanopowders synthesized in microwave plasma and extraordinarily strong temperature influence on their Mössbauer spectra (en)
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skos:notation
| - RIV/68378271:_____/12:00392673!RIV14-AV0-68378271
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - I, P(GA202/08/0178), P(GD104/09/H080)
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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
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/68378271:_____/12:00392673
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - gamma-Fe2O3; nanoparticles; Mössbauer and Raman spectra; XRD; TEM; magnetic meas (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of Nanoscience and Nanotechnology
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - David, Bohumil
- Schneeweiss, Oldřich
- Šantavá, Eva
- Jašek, O.
- Kudrle, V.
- Pizúrová, Naděžda
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http://linked.open...ain/vavai/riv/wos
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issn
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number of pages
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http://bibframe.org/vocab/doi
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