Preparation of CuFe2O4/SiO2 nanocomposite by sol-gel method

• Autorzy: Plocek J. , Hutlová A. , Nižňanský D. , Buršik J. , Rehspringer J.L. , Mička Z.
• Języki publikacji: EN

Abstrakty

EN

This work has the aim to characterize the phase relations in the CuFe2O4/SiO2 system. The samples were prepared by the sol-gel method. Final heat treatment of the samples was carried out at temperatures in the range of 800-1100°C. Final products were characterized by HR TEM, X-ray diffraction, magnetic measurements, and Mössbauer spectroscopy. HR TEM revealed nanocrystals of the size of about 7-130 nm, depending on the heat treatment temperature. The spinel structure of CuFe2O4 in the amorphous silica matrix proved to be stable up to 1100°C without decomposition to the copper silicate and iron (III) oxide. At the same time, the amorphous silica matrix recrystallized to the cristobalite at 1100°C.

Słowa kluczowe

EN

sol-gel; spinel ferrite; silica matrix; nanocomposites; Mössbauer spectroscopy; transmission electron microscopy; magnetic measurements

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2005
• Tom: Vol. 23, No. 3
• Strony: 697--705
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Plocek J.

autor

Hutlová A.

autor

Nižňanský D.

autor

Buršik J.

autor

Rehspringer J.L.

autor

Mička Z.

• Institute of Inorganic Chemistry, ASCR, 25068 Řež u Prahy, Czech Republic,

Bibliografia

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