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Characterization of nanostructured spinel NiFe2O4 obtained by soft mechanochemical synthesis

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Author(s): Lazarević Z.Ž. | Jovalekić Č. | Sekulić D. | Slankamenac M. | Romčević M. | Milutinović A. | Romčević N.Ž.

Journal: Science of Sintering
ISSN 0350-820X

Volume: 44;
Issue: 3;
Start page: 331;
Date: 2012;
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Keywords: NiFe2O4 | Raman spectroscopy | DC conductivity | complex impedance

ABSTRACT
Powdery nickel ferrite, NiFe2O4 has been obtained by soft mechanochemical synthesis in a planetary ball mill. Ni(OH)2 and Fe(OH)3 are used as initial compounds. This mixture was mechanically activated for 25h, uniaxial pressed and sintered at 1100°C for 2h. The phase composition of the sintered sample was analyzed by X-ray diffraction (XRD), energy dispersive spectrometer (EDS) and Raman spectroscopy. Morphologies were examined by scanning electron microscopy (SEM). The electrical DC/resistivity/conductivity at different temperatures was measured using a Source Meter Keithley 2410. An Impedance/Gain-Phase Analyzer (HP-4194) was used to measure the impedance spectra (100Hz - 10MHz) at different temperatures. [Projekat Ministarstva nauke Republike Srbije, br. III 45003 i br. III 45015]
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