Ceramics-Silikáty 57, (2) 162 - 166 (2013) |
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SYNTHESIS AND MAGNETIC PROPERTIES OF Zn SPINEL CERAMICS
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Huber Štěpán 1,2, Sofer Zdeněk 1, Nádherný Ladislav 1,
Jankovský Ondřej 1,
Šimek Petr 1,
Sedmidubský David 1,
Maryško Miroslav 2
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1 Department of Inorganic Chemistry, Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic
2 Institute of Physics of ASCR v.v.i., Cukrovarnická 10/112, 162 00 Prague 6, Czech Republic
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Keywords: Zn spinel, Synthesis, Magnetic properties, Antiferromagnet, Bulk ZnO
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We present the synthesis and characterization of ZnTM2O4 spinels (where TM = Cr3+, Mn3+, Fe3+ and Co3+), which are possible
impurity phases in TM-doped ZnO that represent a large family of diluted magnetic semiconductors (DMS). The aim of our
study was to find a uniform technique simplifying the whole synthesis of zinc spinels and their magnetic characterization.
The synthesis was carried out by a conventional ceramic route with one calcination and two sintering steps. The structure
of the prepared samples was proofed by X-ray diffraction analysis and magnetic properties were studied using SQUID
magnetometer. Excluding the cobalt spinel, all spinels were singe phase and showed antiferromagnetic behavior. |
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