Composition and magnetic properties of M-Ba ferrite powders fabricated via sugar-nitrates process

• Autorzy: Tang X. , Yang Y. G.
• Języki publikacji: EN

Abstrakty

EN

Fine M-type hexagonal barium ferrite (M-Ba ferrite) powders were synthesized by a novel sugarbased process. The effects of synthesis variables such as the molar ratio of Fe/Ba, the calcination temperature and the pH value of the precursor solution on the phase component of the obtained powder and the magnetic properties of M-Ba ferrite were studied by the thermogravimetric analysis, differential thermal analysis, X-ray diffraction, scanning electron microscopy and a physical properties measurement system. The results of this study showed that magnetic properties and formation of M-Ba ferrite were significantly influenced by the Fe/Ba molar ratio, the heat treatment temperature and pH of the precursor solution. Single phase M-Ba ferrite powders with the specific saturation magnetization of 63.6 emu/g and the coercivity of 1849 Oe could be obtained when the Fe/Ba molar ratio was 11.5 and the pH value of precursor solution was 6.5.

Słowa kluczowe

EN

sugar-nitrates process; M-Ba ferrite powder; X-ray diffraction; magnetic properties

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2009
• Tom: Vol. 27, No. 2
• Strony: 529--537
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Tang X.

autor

Yang Y. G.

• State Key Laboratory of OGRGE, Southwest Petroleum University, No. 8 Xindu Road, Chengdu 610500, P.R. China

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