Abstract
The magnetic properties of system CoGa 2-x Fe x O 4 (x=0.1, 0.2, 0.3, 04, 0.5., 0.8, 1) with spinel structure were investigated by means of dc susceptibility and dc magnetization measurements in magnetic fields 1-12kOe as well as by means of Mossbauer effect. The results of magnetic measurements show that compounds with 0.1 ≤ x ≤ 0.5 exhibit features typical for spin glasses and ones with x=0.8 and 1 have a ferromagnetic ordering. The compounds with x=0.8 and 1 exhibit relaxation behaviour in their Mossbauer spectra.
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