Title

The Enhanced Coercivity for the Magnetite/silica Nanocomposite at Room Temperature

Document Type

Article

Publication Date

Fall 2004

Abstract

Magnetite/silica nanocomposite was synthesized by a facile solvothermal processing at 150 °C for about 10 h. X-ray diffraction (XRD) analysis revealed the effect of annealing on the crystallinity of silica. Transmission electron microscopy (TEM) images showed the good dispersion of magnetite in the silica matrix. Magnetic properties of the nanocomposite were characterized by vibration sample magnetometer (VSM), and the enhanced coercivity was explained by the intrinsic anisotropy of the particles enhanced by the interparticle dipolar fields.

Volume

39

Issue

12

First Page

1875

Last Page

1880

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