Low Concentration Effect of Fe_3O_4 and Fe_3C Magnetic Nanoparticles in Non-Magnetic Matrix on the FMR Spectra

• Authors: T. Bodziony , N. Guskos , Z. Roslaniec , U. Narkiewicz , M. Kwiatkowska , M. Maryniak
• Languages of publication: EN

Abstracts

EN

PTMO-block-PET polymer filled with a low concentration (0.1 wt.%) of binary magnetic system: magnetite (Fe_3O_4) and iron carbide (Fe_3C) with carbon (C) was prepared. Characterization of the sample was done by using X-ray diffraction and scanning electron microscopy methods. Temperature dependence of the FMR spectra was carried out in the 10-300 K temperature range. The extraordinary temperature dependence behaviour of FMR spectra was recorded. The FMR spectra were fitted by two Lorentzian lines originating from magnetite and iron carbide. The anomalous behaviour of FMR spectra below 100 K could be explained by the skin effect or by the freezing of the matrix benzene rings at about 115 K. The temperature dependence of the g parameter below 75.5 K (opposite shift of the resonance field to usually observed) was interpreted as a result of strong antiferromagnetic interaction of some portion of agglomerates.

Keywords

EN

76.50.+g; 75.70.-i

Discipline

• 75.70.-i: Magnetic properties of thin films, surfaces, and interfaces(for magnetic properties of nanostructures, see 75.75.-c)
• 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: 2005
• Volume: 108
• Issue: 2
• Pages: 297-302

Dates

published

2005-08

received

2005-04-24

Contributors

author

T. Bodziony

• Institute of Physics, Szczecin University of Technology, al. Piastów 17, 70-310 Szczecin, Poland

author

N. Guskos

• Institute of Physics, Szczecin University of Technology, al. Piastów 17, 70-310 Szczecin, Poland
• Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, 15 784, Athens, Greece

author

Z. Roslaniec

• Institute of Material Engineering, Szczecin University of Technology, al. Piastów 17, 70-310 Szczecin, Poland

author

U. Narkiewicz

• Department of Chemical Engineering, Szczecin University of Technology, al. Piastów 17, 70-310 Szczecin, Poland

author

M. Kwiatkowska

• Institute of Material Engineering, Szczecin University of Technology, al. Piastów 17, 70-310 Szczecin, Poland

author

M. Maryniak

• Institute of Physics, Szczecin University of Technology, al. Piastów 17, 70-310 Szczecin, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.108.297