Record number :
Title of article :
Magnetic nanocomposite thin films of NiFe2O4/SiO2 prepared by sol–gel process
Author/Authors :
Nelcy D.S. Mohallem، نويسنده , , Luciana M. Seara، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
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Abstract :
Magnetic nanocomposite thin films formed by nickel ferrite particles dispersed in silica matrix have been prepared by sol–gel process. The starting solution was prepared using tetraethylorthosilicate (TEOS) as a precursor of silica, and metallic nitrates as precursors of the ferrite. NiFe2O4/SiO2 films were prepared with 5–30 wt.% ferrite contents and deposited on glass, quartz and silicon plates using the dip-coating process. The films obtained were adherent, transparent, homogeneous, and free of microcracks, with thickness between 70 and 100 nm. The nanocomposite films presented the formation of crystalline NiFe2O4 nanoparticles measuring between 6 and 10 nm dispersed in amorphous SiO2 matrix and a saturation magnetization above 8 emu/g.
Keywords :
Magnetic thin films , Sol–gel process , Nickel ferrite nanocomposite
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
Link To Document :