Abstract
The electronic relaxation process measured in manganese ferrites (Mn xFe 3-xO 4) at frequencies of 20–500 kc/s in the temperature range of 80–350°K may be ascribed to the electron transfer between Fe-ions on octahedral sites if the composition has a shortage of manganese (x < 1) and to the electron transfer between both iron and manganese ions if the composition is iron deficient (x > 1). This interpretation is supported by magnetic relaxation and electrical conductivity measurements. The activation energy of the magnetic relaxation equals the activation energy of the conductivity described by the hopping model.
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