Abstract
Two mixed copper ferrite systems, Cu
1+
x
Ge
x
Fe
2−2
x
O
4 (system 1) and Cu
1+
x
Ti
x
Fe
2−2
x
O
4 (system 2) with
x = 0, 0.1, 0.2, 0.3 and 0.4 were analogously investigated. The two systems were prepared using the standard ceramic method. X-ray analysis shows that both systems were formed in a single spinel phase except the sample with
x = 0.4 for the two system. Some of the magnetic properties were measured, such as the initial permeability, magnetization and relative permeability. It was found that the Curie temperature (
T
C) decreases from 714 to 542
K for the first system while it decreases from 714 to 570
K for the second system. The cation distribution of the two systems was proposed. The sample with
x = 0 (CuFe
2O
4) shows the lowest magnetization value for both systems. The behaviour of relative permeability shows two regions for the first system and three for the second system.