INVESTIGADORES
BERCOFF Paula Gabriela
artículos
Título:
Magnetic and dielectric properties of nanophase manganese zinc substituted lithium ferrite
Autor/es:
E. DE FAZIO; P. G. BERCOFF; S. E. JACOBO
Revista:
Solid State Phenomena
Editorial:
Trans Tech Publications
Referencias:
Año: 2011 vol. 168 p. 353 - 356
ISSN:
1662-9779
Resumen:
Nanocrystalline lithium-substituted
manganese-zinc ferrites Li0.5xMn0.4Zn0.6-xFe2+0.5xO4 were prepared by the
sol-gel autocombustion method. X-ray diffraction analysis (XRD) confirmed that
samples are single-phase and that only a spinel phase is present. The
saturation magnetization increases while the cell parameter of the cubic phase
decreases with Li concentration. Magnetic permeability and dielectric
permittivity of all samples were measured at room temperature as a function of
frequency. Reflection loss calculations show that the prepared samples are good
electromagnetic wave absorbers in microwave range. Li substitution plays an important role in changing
the structural and magnetic properties of these MnZn ferrites.