Abstract
The influence of Zn incorporation into Cu-modified Co 2Z (Ba 3Co 2Fe 24O 41) ferrite on physical characteristics of low-sintered materials, which have stoichiometric compositions of Ba 3Co 2(0.8− x) Cu 0.4Zn 2 x Fe 24O 41 ( x≤0.50), is investigated. The experimental results show that Zn has little effect on the morphology of Cu-modified ferrites. The average 10–15 μm of lathy grain size for Ba 3Co 2(0.8− x) Cu 0.4Zn 2 x Fe 24O 41 is just like that of Ba 3Co 2(1− x) Cu 0.4Fe 24O 41. In the range of solid solubility of Zn, the lattice parameters ( a and c) of ferrites with Z-type hexagonal phase structure remain stable, compared with the sole Cu-modified ferrite. The variation of key magnetic properties, such as saturation magnetization, remnant magnetization, coercive force, magnetic hysteresis loop and initial permeability, magnetic loss, dielectric constant and Curie temperature of the ferrites as well as the variation mechanism are also addressed in this paper.
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