The structure and magnetic properties of Mn-Zn ferrite thin films fabricated by electroless plating in aqueous solution

摘要

Mn{sub}(1-x)Zn{sub}xFe{sub}2O{sub}4 thin films with various Zn content, 300 nm in thickness, were synthesized on glass substrates at 90℃ without a heat treatment directly by electroless plating in aqueous solution. With XRD, SEM, VSM, the crystallographic structure, morphology of the films and the macroscopic magnetic properties were characterized. The Mn-Zn ferrite films have a single phase spinel structure and well-crystallized columnar grains grow perpendicularly to the substrate. The changes of the H{sub}c is not consistent with that of the bulk materials. As the Zn content in the films increases, the coercivity decreases firstly, and then increases. At x=0.5, the minimum value of H{sub}c is 3.7 kA/m and the value of M{sub}s is 419.6 kA/m. The hyperfine magnetic fields, cation occupation and the distribution of the magnetic moments in film plane were studied by the conversion electron Mossbauer spectroscopy (CEMS).