Magnetic Properties of Mechanochemically Synthesized Mixed Oxides

• Authors: N. Kostova , A. Zorkovská , J. Kováč , N. Velinov , P. Baláž
• Languages of publication: EN

Abstracts

EN

The mixed oxides Fe_{2}O_{3}-ZnO have been obtained in nanocrystalline state by reactive milling in a high-energy planetary mill, from a stoichiometric mixture of hematite and ZnO. The magnetic properties of samples were evaluated by magnetization measurements and Mössbauer spectrometry. A post milling annealing promotes the solid state reaction and improves the zinc ferrite formation, paramagnetic ZnFe_{2}O_{4} phase is formed. Further mechanical activation leads to structural transformation into Wüstite-type (FeZn)O mixed oxide, with ferromagnetic hysteresis and increased magnetization.

Keywords

EN

77.84.Bw; 75.60.-d; 76.80.+y; 61.05.cp; 81.07.Wx

Discipline

• 81.07.Wx: Nanopowders
• 75.60.-d: Domain effects, magnetization curves, and hysteresis(for dynamics of domain structures, see 75.78.Fg)
• 77.84.Bw: Elements, oxides, nitrides, borides, carbides, chalcogenides, etc.
• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 61.05.cp: X-ray diffraction

• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 411-412

Dates

published

2014-07

Contributors

author

N. Kostova

• Institute of Catalysis, Bulgarian Academy of Sciences, acad. G. Bonchev, Bl. 11, 1 1113 Sofia, Bulgaria

author

A. Zorkovská

• Institute of Geotechnics Slovak Academy of Sciences, Watsonova 45, 043 53 Košice, Slovakia

author

J. Kováč

• Institute of Geotechnics Slovak Academy of Sciences, Watsonova 45, 043 53 Košice, Slovakia

author

N. Velinov

• Institute of Catalysis, Bulgarian Academy of Sciences, acad. G. Bonchev, Bl. 11, 1 1113 Sofia, Bulgaria

author

P. Baláž

• Institute of Geotechnics Slovak Academy of Sciences, Watsonova 45, 043 53 Košice, Slovakia

References

• [1] A.K. Mishra, D. Das, Mater. Sci. Eng. B 171, 5 (2010), doi: 10.1016/j.mseb.2010.03.045
• [2] T. Tangcharoen, A. Ruangphanit, W. Pecharapa, Ceramics Inter. 39, S239 (2013), doi: 10.1016/j.ceramint.2012.10.069
• [3] Ch-Yao, Q. Zheng, G.F. Goya, T. Torres, J. Liu, H.Wu, M. Ge, Y. Zeng, Y. Wang, J.Z. Jiang, J. Phys. Chem. C 111, 12274 (2007), doi: 10.1021/jp0732763
• [4] P. Baláž, Mechanochemistry in Nanoscience and Mineral Engineering , ISBN: 3540748547, Springer-Verlag, Berlin Heidelberg, (2008)

Identifiers

DOI

10.12693/APhysPolA.126.411