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Cobalt‐doped ZnO prepared by electrochemistry: Chemistry, morphology, and magnetism
Author(s) -
Matei Elena,
Enculescu Ionut,
Vasilache Violeta,
Teodorescu Cristian Mihail
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200925378
Subject(s) - cobalt , cathodoluminescence , crystallite , x ray photoelectron spectroscopy , ferromagnetism , materials science , doping , magnetism , kerr effect , analytical chemistry (journal) , scanning electron microscope , spectroscopy , magnetometer , magnetic semiconductor , chemistry , chemical engineering , condensed matter physics , optoelectronics , metallurgy , physics , composite material , magnetic field , chromatography , nonlinear system , quantum mechanics , luminescence , engineering
ZnO:Co thin films are prepared by electrochemical deposition at different overpotentials and investigated by scanning electron microscopy, optical spectroscopy, and cathodoluminescence, X‐ray photoelectron spectroscopy and Kerr magnetometry (MOKE). An increase of structural disorder and crystallite reorientation are observed for cobalt‐doped samples. MOKE magnetometry revealed room‐temperature ferromagnetic behavior only for ZnO:Co deposited at −850 mV. These are the samples with the lower cobalt content and lowest structural perturbation of the ZnO matrix by cobalt.