The Influence of NiZnFe2O4 Content on Magnetic Properties of Supermalloy Type Material
L'. Ďákováa, J. Füzer a, S. Dobák a, P. Kollár a, M. Fáberová b, M. Strečková b, R. Bureš b and H. Hadraba c
aInstitute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia
bInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
cCEITEC IPM, Institute of Physics of Materials ASCR, Žižkova 513/22, 616 62 Brno, Czech Republic
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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. Ni0.3Zn0.7Fe2O4 ferrite 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 Ni0.3Zn0.7Fe2O4 content on the electromagnetic properties of NiFeMoMnSi/Ni0.3Zn0.7Fe2O4. The samples contained 5, 10, and 15% of Ni0.3Zn0.7Fe2O4 ferrite and were sintered for 30 min at 800°C. An addition of Ni0.3Zn0.7Fe2O4 ferrite caused decrease of complex permeability and increase coercivity of the samples. The 5% of Ni0.3Zn0.7Fe2O4 sample exhibits the highest value of the real part of complex permeability (48 at 1 kHz). The 10% of Ni0.3Zn0.7Fe2O4 sample showed the lowest total magnetic losses.

DOI: 10.12693/APhysPolA.131.813
PACS numbers: 07.55.-w, 75.60.-d, 75.50.Bb, 75.50.Gg