Modified Precipitation Route for Preparation of Nanocrystalline NiFe204

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

Modified Precipitation Route for Preparation of Nanocrystalline NiFe204

Popis výsledku v původním jazyce

Nanosize Ni-ferrite powders were synthesized by modified precipitation process in which soluble starch was used as dispersing agent. NiS04 'and Fe(N03)3 were used as precursors for NiO and Fe2O3, respectively and Na2CO3 was used as a precipitating agent.Since soluble starch reacts with sodium in alkalization reaction added amount of Na2CO3 had to be determined using the degree of substitution (DS). Two scenarios in which starch reacts with sodium up to level when DS= 1 and DS=3 were studied. The obtained Ni-ferrite powders were analyzed and discussed through structural, compositional and magnetic characterization. Formation of nanocrystalline NiFe2O4 phase was confirmed by the subsequent X-Ray diffraction analysis (XRO), Fourier transform infrared spectroscopy (FTIR) and 57Fe Mossbauer spectroscopy (MS). Although, the average crystallite size of 21 nm was determined by XRD for both studied powders the results of field-emission and conventional scanning electron microscopy FE-SEM/SEM d

Název v anglickém jazyce

Modified Precipitation Route for Preparation of Nanocrystalline NiFe204

Popis výsledku anglicky

Nanosize Ni-ferrite powders were synthesized by modified precipitation process in which soluble starch was used as dispersing agent. NiS04 'and Fe(N03)3 were used as precursors for NiO and Fe2O3, respectively and Na2CO3 was used as a precipitating agent.Since soluble starch reacts with sodium in alkalization reaction added amount of Na2CO3 had to be determined using the degree of substitution (DS). Two scenarios in which starch reacts with sodium up to level when DS= 1 and DS=3 were studied. The obtained Ni-ferrite powders were analyzed and discussed through structural, compositional and magnetic characterization. Formation of nanocrystalline NiFe2O4 phase was confirmed by the subsequent X-Ray diffraction analysis (XRO), Fourier transform infrared spectroscopy (FTIR) and 57Fe Mossbauer spectroscopy (MS). Although, the average crystallite size of 21 nm was determined by XRD for both studied powders the results of field-emission and conventional scanning electron microscopy FE-SEM/SEM d

Druh

O - Ostatní výsledky

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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