INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Electromagnetic properties of manganese?zinc ferrite with lithium substitution
Autor/es:
E. DE FAZIO; BERCOFF, P.G; JACOBO S.E.
Revista:
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2011 vol. 323 p. 2813 - 2817
ISSN:
0304-8853
Resumen:
Polycrystalline manganese?zinc ferrite with lithium substitution of composition Li0.5xMn0.4Zn0.6xFe2þ0.5xO4 (0.0rxr0.4) was prepared by the usual ceramic method. X-ray diffraction analysisconfirmed that the samples have a spinel structure and are of single phase for some values of Licontent. Lithium doping considerably modifies saturation magnetization since its value increases from57.5 emu/g for x¼0.0 to 82.9 emu/g for x¼0.4. Lithium inclusion increases the real permeability(over 1 MHz) while the natural resonance frequency shifts to lower values as the fraction of Liincreases. These ferrites show good electromagnetic properties as absorbers in the microwave range of1 MHz ? 1 GHz.
