INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Electromagnetic properties of lithium zinc ferrites doped with aluminium.
Autor/es:
MARÍA SOL RUIZ; JACOBO, S.E
Revista:
PHYSICA B - CONDENSED MATTER
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2012 vol. 407 p. 3274 - 3277
ISSN:
0921-4526
Resumen:
We present the results of the effect of Al substitution on the magnetic and electrical properties ofLi0.2Zn0.6Fe2.2xAlxO4 ferrites (0.0rxr0.5) prepared by the standard ceramic technique. The char-acterization has been performed using XRD, SEM, magnetic and dielectric response in frequency. XRDanalysis confirms that the system exhibits polycrystalline single phase cubic spinel structure only forlow dopant content. Doping decreases the dielectric loss tangent and the ferrite conductivity in morethan two orders of magnitude in the whole analyzed frequency range. Attenuation has a maximumintensity (86 dB) near 90 MHz for x¼0.4. The wider bandwidth at 20 dB (94.6 MHz) is for x¼0.3.
