?-Fe nanopowder synthesised in low-pressure microwave plasma and studied by Mössbauer spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00375153" target="_blank" >RIV/68378271:_____/11:00375153 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/11:00375153

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1742-6596/303/1/012090" target="_blank" >http://dx.doi.org/10.1088/1742-6596/303/1/012090</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/303/1/012090" target="_blank" >10.1088/1742-6596/303/1/012090</a>

Jazyk výsledku

angličtina

Název v původním jazyce

?-Fe nanopowder synthesised in low-pressure microwave plasma and studied by Mössbauer spectroscopy

Popis výsledku v původním jazyce

An iron-based nanocomposite has been prepared by the microwave plasma method: Fe(CO)5 vapour was introduced into an argon discharge at 1 kPa. The synthesised nanopowder was passivated in situ with a mixture of Ar and air. The as-prepared nanopowder was characterised by XRD, TEM, Raman and Mössbauer spectroscopies. In the XRD pattern of the nanopowder the ?-Fe (d_XRD = 14 nm, 76 wt.%) and Fe(3)O(4) (d_XRD = 3 nm, 24 wt.%) phases were identified only. ?-Fe cores covered with oxide shells were observed under TEM. A huge increase of Mössbauer absorption was observed after the sample was cooled down to 5 K. The results of magnetic and thermal properties studies at low and high temperature are presented. The heat capacity of the sample exhibited an unexpectedly high value of 599 J/kg/K.

Název v anglickém jazyce

?-Fe nanopowder synthesised in low-pressure microwave plasma and studied by Mössbauer spectroscopy

Popis výsledku anglicky

An iron-based nanocomposite has been prepared by the microwave plasma method: Fe(CO)5 vapour was introduced into an argon discharge at 1 kPa. The synthesised nanopowder was passivated in situ with a mixture of Ar and air. The as-prepared nanopowder was characterised by XRD, TEM, Raman and Mössbauer spectroscopies. In the XRD pattern of the nanopowder the ?-Fe (d_XRD = 14 nm, 76 wt.%) and Fe(3)O(4) (d_XRD = 3 nm, 24 wt.%) phases were identified only. ?-Fe cores covered with oxide shells were observed under TEM. A huge increase of Mössbauer absorption was observed after the sample was cooled down to 5 K. The results of magnetic and thermal properties studies at low and high temperature are presented. The heat capacity of the sample exhibited an unexpectedly high value of 599 J/kg/K.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics: Conference Series

ISSN

1742-6588

e-ISSN

—

Svazek periodika

303

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

012090

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—