Magnetic Resonance Study of MnO/ZnO Nanopowders

• Authors: N. Guskos , G. Zolnierkiewicz , J. Typek , D. Sibera , U. Narkiewicz , W. Łojkowski
• Languages of publication: EN

Abstracts

EN

Fine particles n(MnO)/-(1-n)ZnO (n = 0.05 to 0.95) were prepared by wet chemistry method. According to X-ray diffraction analysis the obtained samples with n = 0.95, 0.90, 0.80, 0.70, 0.60 contained Mn_3O_4 and ZnMn_2O_4 phases, while samples with n = 0.05, 0.10, 0.20, 0.30, 0.40 and 0.50 contained ZnMnO_3 and ZnO phases. The mean crystalline size of ZnMnO_3 varied from 8 to 13 nm. The magnetic resonance investigations have been carried out at room temperature. Slightly asymmetric, broad and intense magnetic resonance line is recorded for all samples. The magnetic resonance spectra parameters showed marked differences depending on the composition index n. This could be explained by the variation of the magnetic susceptibility and a much slower evolution of spin relaxation, associated with the interaction of crystal field and superexchange interactions. Taking into account the values of magnetic resonance parameters, the investigated samples could be divided into two groups: these with the composition index n<0.50 and those with n>0.50. A detailed discussion of the magnetic properties of different phases in the n(MnO)/-(1-n)ZnO system is presented.

Keywords

EN

75.50.Tt; 76.30.Fc; 76.50.+g

Discipline

• 76.30.Fc: Iron group (3d) ions and impurities (Ti-Cu)
• 75.50.Tt: Fine-particle systems; nanocrystalline materials
• 76.50.+g: Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance(see also 75.30.Ds Spin waves)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 6
• Pages: 1074-1079

Dates

published

2011-12

received

2011-05-18

Contributors

author

N. Guskos

• Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, Athens, 15 784, Greece
• Institute of Physics, West Pomeranian University of Technology, al. Piastów 48, 70-311 Szczecin, Poland

author

G. Zolnierkiewicz

• Institute of Physics, West Pomeranian University of Technology, al. Piastów 48, 70-311 Szczecin, Poland

author

J. Typek

• Institute of Physics, West Pomeranian University of Technology, al. Piastów 48, 70-311 Szczecin, Poland

author

D. Sibera

• Institute of Chemical and Environmental Engineering, West Pomeranian University of Technology, al. Piastów 17, 70-310 Szczecin, Poland

author

U. Narkiewicz

• Institute of Chemical and Environmental Engineering, West Pomeranian University of Technology, al. Piastów 17, 70-310 Szczecin, Poland

author

W. Łojkowski

• Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.120.1074