- Tytuł:
- Optimization of Magnetic and Structural Properties of Sr Ferrite Prepared by Low-Temperature Combustion
- Autorzy:
-
Grusková, A.
Jančárik, V.
Sláma, J.
Ušáková, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1813884.pdf
- Data publikacji:
- 2008-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.50.-y
75.50.Ww
74.25.Ha
33.45.+x - Opis:
- 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.
- Źródło:
-
Acta Physica Polonica A; 2008, 113, 1; 557-560
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł