Ferrite compound Co0.6Zn0.4NixFe2-xO4 was synthesized by solid state reaction. The structure and per-formance of Co0.6Zn0.4NixFe2-xO4 compounds were studied by Mossbauer spectroscopy,X-ray diffraction (XRD),X-ray photoelectron spectroscopy (XPS) and infrared radiant tester. Mossbauer spectroscopy and XPS analysis show the valence states and distribution of cations in Co0.6Zn0.4NixFe2-xO4. Zn2+ has invari-ably shown preference for the tetrahedral sites,and Ni2+ has the preference for the octahedral sites. The occupancy of Fe3+ linearly increases on the tetrahedral sites,and sharply decreases on the octahedral sites with increasing x,owing to its gradual replacement by Ni2+ on the octahedral sites. It indicates that clue to the occupation of octahedral sites by the majority of Ni2+,Fe3+ decreasingly migrated from the octahedral sites to the tetrahedral sites and substituted Co3+ sites,which made the number of Co3+ in the tetrahedral sites decreasing. According to the measurement results of XRD and the infrared radiant tester analysis,the lattice parameter and infrared radiance have shown a nonlinear variation,exhibiting the infrared average radiance of 0.92 in the 8-14 μm waveband,and the results demonstrate that these Co-Zn-Ni spinel ferrites have potentialfor application in a wide range of infrared heating and drying materials.
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