Phase Structure and Heat Generation in the Co-Precipitated Magnetite Nanoparticles

• Authors: P. Pawlik , M. Pruba , K. Pawlik , K. Kotynia
• Languages of publication: EN

Abstracts

EN

In the present studies the phase structure and magnetic ordering of magnetite nanoparticles were investigated. The powder samples were obtained by co-precipitation from Fe(III) and Fe(II) salts. SiO₂ coating was performed using the modified Stöber process. X-ray diffraction studies revealed presence of the only one Fe₃O₄ crystalline phase both for the non-coated and SiO₂-coated samples. The Mössbauer studies have shown differences in shapes of measured spectral lines for Fe₃O₄ particles subjected to the Stöber process and non-coated particles. The heating efficiency was measured for glycerol dispersed nanoparticles. The analysis have shown changes in specific loss power depending on the concentration of the nanoparticles and amplitude of alternating magnetic field.

Keywords

EN

75.47.Lx; 78.67.Bf; 78.70.Ck; 76.80.+y; 87.50.S-

Discipline

• 78.67.Bf: Nanocrystals, nanoparticles, and nanoclusters
• 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)
• 75.47.Lx: Magnetic oxides
• 78.70.Ck: X-ray scattering
• 87.50.S-: Radiofrequency/microwave fields effects

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 5
• Pages: 1217-1221

Dates

published

2017-05

Contributors

author

P. Pawlik

• Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

author

M. Pruba

• Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

author

K. Pawlik

• Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

author

K. Kotynia

• Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

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Identifiers

DOI

10.12693/APhysPolA.131.1217