Synthesis and Characterization of Superparamagnetic Co3O4@ZnO Nanocomposite

We report the sequential polyol synthesis of Co 3 O 4 @ZnO nanocomposite. Firstly, Co 3 O 4 was synthesized and ZnO was produced on the surface of the as synthesized Co 3 O 4 NPs in the same pot. The nanoparticles have been investigated by powder X-ray diffraction (XRD), Fourier transform infrared s...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2014-07, Vol.27 (7), p.1751-1755
Main Authors: Shafiu, S., Kavas, H., Baykal, A.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
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Summary:We report the sequential polyol synthesis of Co 3 O 4 @ZnO nanocomposite. Firstly, Co 3 O 4 was synthesized and ZnO was produced on the surface of the as synthesized Co 3 O 4 NPs in the same pot. The nanoparticles have been investigated by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), and physical properties measurement system (PPMS) of Quantum Design. The weight percentage of phases were found as 26.3 % for ZnO and 73.5 % Co 3 O 4 (crystal thickness ratio ) by using the generalized reference intensity ratios (RIRs) method. Superparamagnetism in Co 3 O 4 @ZnO nanocomposite at room temperature was first detected with high Ms value of 10 emu/g, and the non-hysteric curve with nearly saturated nature at high fields. This non-hysteric and nearly saturated nature at 15 kOe is the nature of superparamagnetic structures.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-014-2506-3