Mohai, Ilona and Szépvölgyi, János and Bertóti, Imre and Mohai, Miklós and Gubicza, Jenő and Ungár, Tamás (2001) Thermal plasma synthesis of zinc ferrite nanopowders. In: 14th International Symposium on the Reactivity of Solids (XIVth ISRS), 2000. augusztus 27-31., Budapest, Hungary.
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Nanosized zinc ferrite spinel powders of various compositions were produced in a radiofrequency (RF) thermal plasma from oxide mixtures and from co-precipitated hydroxides. Bulk and surface chemical compositions of the products were measured by ICP-AES and XPS. Phase conditions were determined by XRD. Morphology was investigated by SEM and TEM. In spite of the short residence time of reagents in the plasma reactor, a high degree of spinel formation was achieved. The Zn enrichment on the surface determined by quantitative XPS is attributed to a thin ZnO layer on the surface of the zinc ferrite particles. In zinc ferrous ferrites. an inhomogeneous distribution of Zn inside the grains may also exist.
|Item Type:||Conference or Workshop Item (Paper)|
|Subjects:||Q Science / természettudomány > QC Physics / fizika
Q Science / természettudomány > QD Chemistry / kémia
|Depositing User:||Erika Bilicsi|
|Date Deposited:||16 Oct 2012 06:48|
|Last Modified:||16 Oct 2012 06:48|
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