Optimization of Magnetic and Structural Properties of Sr Ferrite Prepared by Low-Temperature Combustion

• Authors: A. Grusková , V. Jančárik , J. Sláma , M. Ušáková
• Languages of publication: EN

Abstracts

EN

Fine strontium hexaferrite particles were prepared by the low temperature auto-combustion method. Aqueous solution of the corresponding metal salts and a combustible co-reactant compound - glycine were used as initial precursor. The resulting powders were calcined at various temperatures from 750°C up to 1100°C. The microstructure and magnetic properties were investigated by the Mössbauer spectroscopy, thermomagnetic analysis, scanning electron microscopy, and vibrating magnetometer. The particles of sizes less than 1 μm have monophasic hexagonal structure. Coercivity H_c≈400 kA/m, specific saturation polarization J_{s-m} ≈ 72×10^{-6} Tm^3 kg^{-1} and remanence polarization J_{s-r} ≈ 43×10^{-6} T m^3 kg^{-1} were achieved for the Sr ferrite annealed at 850°C for 6 h.

Keywords

EN

75.50.-y; 75.50.Ww; 74.25.Ha; 33.45.+x

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 75.50.-y: Studies of specific magnetic materials
• 75.50.Ww: Permanent magnets(for magnets, see 07.55.Db in instruments)
• 33.45.+x: Mössbauer spectra(see also 76.80.+y Mössbauer effect; other γ-ray spectroscopy in condensed matter; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 557-560

Dates

published

2008-01

received

2007-07-09

Contributors

author

A. Grusková

• Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia

author

V. Jančárik

• Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia

author

J. Sláma

• Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia

author

M. Ušáková

• Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.113.557