Structural and magnetic properties of ZnO:TM (TM: Co,Mn) nanopowders
classification
❄️ cond-mat.mtrl-sci
keywords
magneticnanopowdersstructuralagingattributedcharacterizationchemistrydefects
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We report on the structural and magnetic characterization of Co0.1Zn0.9O and Mn0.1Zn0.9O nanopowders obtained by a soft chemistry route. We show that those samples fired at low temperatures display a ferromagnetic interaction that can not be attributed to the presence of impurities. A magnetic aging mechanism is observed, reflecting the key role played by defects in the stabilization of ferromagnetism in this kind of diluted magnetic semiconductors.
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