Paramagnetic behavior at room temperature of Zn1−xMnxTe nanocrystals grown in a phosphate glass matrix by the fusion method

This work reports on the synthesis and characterization of Zn1−xMnxTe nanocrystals (NCs) with Mn doping concentration x varying from 0.000 to 0.800. Physical properties of samples were studied by transmission electron microscopy, magnetic force microscopy, vibrating sample magnetometry and electron...

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Bibliographic Details
Published in:Journal of alloys and compounds 2015-10, Vol.647, p.637-643
Main Authors: Silva, Alessandra S., Franco, Adolfo, Pelegrini, Fernando, Dantas, Noelio O.
Format: Article
Language:English
Subjects:
Nanoscale diluted magnetic semiconductors (DMS)
Paramagnetic behavior at room temperature
Zn1−xMnxTe nanocrystals
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Summary:This work reports on the synthesis and characterization of Zn1−xMnxTe nanocrystals (NCs) with Mn doping concentration x varying from 0.000 to 0.800. Physical properties of samples were studied by transmission electron microscopy, magnetic force microscopy, vibrating sample magnetometry and electron paramagnetic resonance spectroscopy. Room temperature experiments revealed the size of NCs, the growth of magnetization and non-linear dependence of magnetic susceptibility on the concentration of Mn2+ ions; samples with low concentrations revealed the presence of ions in the interior and near the surface of the NCs. The results obtained confirm the paramagnetic behavior of Zn1−xMnxTe NCs at room temperature. [Display omitted]
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2015.06.033