Artículos de revistas
Magnetic properties enhancement of M-Ba ferrites embedded in a Sio2 matrix
Author
SELINA REBECA DEL CARMEN PONCE CASTAÑEDA
SALVADOR ANTONIO PALOMARES SANCHEZ
JOSE ANDRES MATUTES AQUINO
Institutions
Abstract
M–Ba ferrite powders prepared by the coprecipitation method were embedded,
using the sol–gel technique, in an inert silica xerogel matrix. Samples were analysed by
X-ray diffraction and vibrating sample magnetometry. We compare the magnetic and
structural properties of pure ferrite samples and those embedded in the inorganic
matrix. The mixed samples had a proportion of 30% BaFe12O19:70% SiO2 in weight. We
observed an enhancement of the coercive force in ferrite powders, embedded in the
SiO2 matrix, accompanied by a decrease of the saturation magnetization, with respect
to pure samples.
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