MAGNETIC PROPERTIES AND INTERPARTICLE MAGNETIC INTERACTIONS IN POWDER SAMPLES OF MAGNETITE AND MAGNESIUM OXIDE MIXTURES

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

MAGNETIC PROPERTIES AND INTERPARTICLE MAGNETIC INTERACTIONS IN POWDER SAMPLES OF MAGNETITE AND MAGNESIUM OXIDE MIXTURES

Popis výsledku v původním jazyce

In this paper, magnetic properties and interparticle magnetic interactions of the powder mixtures consisting of a ferromagnetic magnetite (mean particle size about 50 nm) and diamagnetic MgO (micrometric particles) are presented. Mixtures with concentrations of Fe3O4 from 10 to 80 wt. % were prepared using two methods: ultrasonic homogenization and manual mechanical mixing. Additionally the powder mixtures were mechanically pressed in a specially developed device to produce samples in form of pills with the diameter of 10 mm. An EV9 MicroSense vibrating sample magnetometer (VSM) was used for measurements of the virgin curves and magnetization loops. Both measured quantities were used for construction of the Henkel plots that indicate the behavior of the magnetic interparticle interactions of prepared samples. We have discovered that the sample with 30 wt. % of Fe3O4 exhibited the most intensive interparticle interactions and at the same time the highest value of the remnantand saturation magnetization.

Název v anglickém jazyce

MAGNETIC PROPERTIES AND INTERPARTICLE MAGNETIC INTERACTIONS IN POWDER SAMPLES OF MAGNETITE AND MAGNESIUM OXIDE MIXTURES

Popis výsledku anglicky

In this paper, magnetic properties and interparticle magnetic interactions of the powder mixtures consisting of a ferromagnetic magnetite (mean particle size about 50 nm) and diamagnetic MgO (micrometric particles) are presented. Mixtures with concentrations of Fe3O4 from 10 to 80 wt. % were prepared using two methods: ultrasonic homogenization and manual mechanical mixing. Additionally the powder mixtures were mechanically pressed in a specially developed device to produce samples in form of pills with the diameter of 10 mm. An EV9 MicroSense vibrating sample magnetometer (VSM) was used for measurements of the virgin curves and magnetization loops. Both measured quantities were used for construction of the Henkel plots that indicate the behavior of the magnetic interparticle interactions of prepared samples. We have discovered that the sample with 30 wt. % of Fe3O4 exhibited the most intensive interparticle interactions and at the same time the highest value of the remnantand saturation magnetization.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

NANOCON 2015 : 7th international conference : conference proceedings : (reviewed version) : October 14th-16th 2015, Hotel Voronez I, Brno, Czech Republic, EU

ISBN

978-80-87294-63-5

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

5

Strana od-do

626-630

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

14. 10. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000374708800109