Nanocrystalline ZnO Doped with Fe2O3 - Magnetic and Structural Properties
I. Kuryliszyn-Kudelskaa, B. Hadžićb, D. Siberac, L. Kilanskia, N. Romčevićb, M. Romčevićb, U. Narkiewiczc and W. Dobrowolskia
aInstitute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
bInstitute of Physics, Belgrade University, Pregrevica 118, 11080 Belgrade, Serbia
cInstitute of Chemical and Environment Engineering, West Pomeranian University of Technology, K. Pułaskiego 10, 70-322 Szczecin, Poland
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We have studied the magnetic properties of ZnO nanocrystals doped with Fe2O3 in the magnetic dopant range from 5 to 70 wt%. The nanocrystals were synthesized by wet chemical method. The detailed structural characterization was performed by means of X-ray diffraction and micro-Raman spectroscopy measurements. The results of systematic measurements of magnetic AC susceptibility as a function of temperature and frequency are presented. We observed different types of magnetic behavior. For ZnO samples doped with low content of Fe2O3, the results of low-field AC susceptibility are satisfactorily explained by superparamagnetic model including inter-particle interactions. With the increase of magnetic Fe2O3 content, the spin-glass-like behavior is observed.
DOI: 10.12693/APhysPolA.119.689
PACS numbers: 75.50.Tt, 81.05.Dz, 75.50.Lk, 75.50.Vv