INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Magnetic and dielectric properties of nanophase lithium-substituted manganese-zinc ferrite
Autor/es:
E. DE FAZIO; P. G. BERCOFF; S. E. JACOBO
Revista:
Solid State Phenomena
Editorial:
SSP - Home
Referencias:
Año: 2011 vol. 168 p. 353 - 356
ISSN:
1662-9779
Resumen:
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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 monophasic and that only 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.
