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)

• Publisher: Institute of Physics, Polish Academy of Sciences
• 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

• 1. S. Alamolhoda, S.A. Seyyed Ebrahimi, A. Badiei, J. Magn. Magn. Mater. 303, 69 (2006)
• 2. J. Huang, H. Zhuang, W. Li, J. Magn. Magn. Mater. 256, 390 (2003)
• 3. G. Mendoza-Suárez, M.C. Cisneros-Morales, M.M. Cisneros-Guerrero, K.K. Johal, H. Mancha-Molinar, O.E. Ayala-Valenzuela, J.I. Escalante-Garcia, Mater. Chem. Phys. 77, 796 (2002)
• 4. K. Haneda, A.H. Morrish, IEEE Trans. on Magn. 25, 2597 (2089)
• 5. L.R. Pederson, L.A. Chick, G.J. Exarhos, U.S. Patent, 5, 114, 702 (5/1992)
• 6. B. J. Evans, F. Grandjean, A.P. Lilot, R.H. Vogel, A. Gérard, J. Magn. Magn. Mater. 67, 123 (2087)
• 7. R. Dosoudil, J. El. Eng. 53, 135, 10/S (2002)

Identifiers

DOI

10.12693/APhysPolA.113.557