Τίτλος:
Magnetic study of 0.20(Fe2O3)/0.80(ZnO) nanocomposite
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
ZnO nanocrystals doped with Fe2O3 have been synthesized by the calcination method. Ferromagnetic resonance (FMR) and dc magnetization measurements of 0.2(Fe2O3)/0.8(ZnO) nanocomposite have been carried out in the 4-300 K range. The presence of agglomerated magnetic zinc ferrite ZnFe2O4 nanoparticles in 0.2(Fe2O3)/0.8(ZnO) nanocomposite with an average crystallite size of 8 nm was identified by XRD. Temperature dependence of the resonance field, linewidth and the integrated intensity calculated from FMR spectra has been determined. Magnetization measurements in ZFC and FC modes as well as study of hysteresis loops allowed calculating different magnetic characteristics - blocking/freezing temperature, magnetic moment, anisotropy constant and anisotropy field. The observed magnetic properties of 0.2(Fe 2O3)/0.8(ZnO) nanocomposite were explained based on the core-shell model of ZnFe2O4 nanoparticles covered by ZnO layer. © 2014 Elsevier B.V.
Συγγραφείς:
Typek, J.
Wardal, K.
Zolnierkiewicz, G.
Guskos, N.
Sibera, D.
Narkiewicz, U.
Περιοδικό:
Journal of Magnetism and Magnetic Materials
Λέξεις-κλειδιά:
Anisotropy constants; Ferromagnetic resonance (FMR); Integrated intensities; Magnetic characteristic; Magnetic nano-particles; Magnetization measurements; Temperature dependence; Zinc ferrite, Anisotropy; Ferromagnetic resonance; Magnetic materials; Magnetic moments; Magnetic properties; Magnetization; Nanocomposites; Nanomagnetics; Nanoparticles; Zinc compounds, Zinc oxide
DOI:
10.1016/j.jmmm.2014.02.065
