The synthesis and the magnetic properties of Nd2O3-doped Ni-Mn ferrites nanoparticles

Nanocrystalline Ni0.7Mn0.3NdxFe2-xO4 ferrites (Nd2O3-doped Ni-Mn ferrites) have been prepared by the emulsion method. The structure and the morphology of the ferrite nanoparticles were measured by using X-ray diffractometer (XRD), Differential thermal analysis (DTA) and thermal gravity (TG). It is shown that the structure of Ni0.7Mn0.3NdxFe2-xO4 ferrite nanoparticles is single spinel structure. The average crystalline sizes of the samples are from 7.0 to 62.3 nm. The magnetic properties of samples were tested at room temperature by using a Vibrating Sample Magnetometer (VSM). The nanoparticles of the samples have superparamagnetisim which particle sizes are about 10 nm