The Influence of NiZnFe_2O_4 Content on Magnetic Properties of Supermalloy Type Material

Soft magnetic composites represent a remarkable kind of materials with wide variety of use.Magnetic properties are dependent on the materials composition and also on the method of preparation.Ni-Fe-Mo alloys (supermalloy) have high complex permeability and low eddy current losses.Soft magnetic NiZnFe2O4 ferrites have low coercivity and intermediate saturation magnetization.The Ni80Fe14.7Mo4.5Mn0.5Si0.3(wt%) powder sample was prepared by mechanical alloying of the chemical elements for 24 h.Ni0.3Zn0.7Fe2O4ferrite is commercially available by Sigma Aldrich.Both powders were mixed at selected ratio and uniaxially compacted at 800 MPa.In this paper, we report the experimental observations of the effects of Ni0.3Zn0.7Fe2O4content on the electromagnetic properties of NiFeMoMnSi/Ni0.3Zn0.7Fe2O4.The samples contained 5, 10, and 15% of Ni0.3Zn0.7Fe2O4ferrite and were sintered for 30 min at 800 • C.An addition of Ni0.3Zn0.7Fe2O4ferrite caused decrease of complex permeability and increase coercivity of the samples.The 5% of Ni0.3Zn0.7Fe2O4sample exhibits the highest value of the real part of complex permeability (48 at 1 kHz).The 10% of Ni0.3Zn0.7Fe2O4sample showed the lowest total magnetic losses.