Effect of the La3+ ions substitution on the magnetic properties of spinal Li-Zn-ferrites at low temperature

TLDR: In this paper, the effect of La 3+ ions substitution on the magnetic properties of the composition Li 0.5−0.5 x Zn y La x Fe 2.5 − y O 4 (0.02 − 0.1; y ǫ = 0.6) was studied.

Abstract: The effect of La 3+ ions substitution on the magnetic properties of the composition Li 0.5−0.5 x Zn y La x Fe 2.5−0.5 x − y O 4 (0.02 ≤  x  ≤ 0.1; y  = 0.6) was studied. The structure of the samples was investigated using X-ray, SEM and IR. Both of zero field cooled (ZFC) and field cooled (FC) modes magnetization were studied at low temperature range (2 K ≤  T  ≤ 400 K). Magnetization applied field-dependence ( M – H ) curves were measured at low temperature (5 K). The experimental data revealed that the samples exhibited a phase transition from ferrimagnetic state at low temperature to paramagnetic state at high temperature (400 K). The obtained Curie temperature was shifted to lower value with La 3+ -content. The M – H carves showed that the samples are soft ferromagnetic and it can be an excellent candidate for industrial applications.