Abstract
Conditions were established and individual and mixed ferrites with the general formula CuxZn1−xFe2O4 (x=0; 0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 1.0) were synthesized from the CuO−ZnO−Fe2O3 system. X-ray phase analysis, Mössbauer spectroscopy and microscopic examinations revealed that the obtained ferrites are monophase samples.
A magnetic device was attached to the Q-Derivatograph (MOM, Hungary) and successfully used for sample investigation in a magnetic field, and in particular for Curie (Neel) temperature determination. The ferrite composition and the thermal treatment conditions were shown to correlate with the Neel temperature of the synthesized ferrites.
Zusammenfassung
Die Bedingungen im System CuO−ZnO−Fe2O3 wurden ermittelt und Einzel-als auch Mischferrite der allgemeinen Formel CuxZn1−xFe2O4 (mitx=0; 0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 1.0) hergestellt. Röntgenphasenanalyse, Mössbauerspektroskopie und mikroskopische Untersuchungen ergaben, daß es sich bei den erhaltenen Ferriten um Monophasen-proben handelt.
Einem Q-Derivatographen (MOM, Hungary) wurde eine Magneteinheit angeschlossen und erfolgreich für die Untersuchung der Proben in einem magnetischen Feld, im speziellen für die Bestimmung des Curie-Punktes eingesetzt. Es wurde die Korrelation zwischen den Bedingungen für die thermische Behandlung und dem Curie-Punkt der hergestellten Ferrite gezeigt.
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Boyanov, B.S. Synthesis and neel temperature determination of ferrites from the CuO−ZnO−Fe2O3 system. Journal of Thermal Analysis 44, 707–716 (1995). https://doi.org/10.1007/BF02636288
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DOI: https://doi.org/10.1007/BF02636288