Resumo

BARRON-LOPEZ, J. F.; MONTIEL, H.; MATA-ZAMORA, M. E.  e  ALVAREZ, G.. Obtención y caracterización de películas magnéticas de ferrita de Ni-Zn por depósito electroforético. Superf. vacío [online]. 2011, vol.24, n.4, pp.126-131. ISSN 1665-3521.

By means of electrophoretic deposition (DEF, for its acronym in Spanish) and colloidal precursor, it was obtained a nickel-zinc ferrite film (FNZ, for its acronym in Spanish). The film was characterized by x-ray Diffraction (DRX, for its acronym in Spanish) and Raman Spectroscopy. The surface of the film was analyzed topographically by atomic force microscopy (MFA, for its acronym in Spanish) and, magnetically, by magnetic force microscopy (MFM, for its acronym in Spanish). These studies showed a high roughness which acts as pilling points for magnetic walls. The hysteresis loops and the ferromagnetic resonance spectra (RFM, for its acronym in Spanish) show that the microstructure of the film induces an increase in its magnetic anisotropy. The RFM study indicates that this increase is originated from the magnetoelastic contribution in the interface FNZ/substrate. The results indicate that by means of DEF, ferrite films are obtained with magnetic proprieties strongly coupled to its microstructure.

Palavras-chave : Ni-Zn ferrite; Electrophoretic Deposition; Magnetic films; Magnetic properties; Microstructure.