Influence of V2O5 on the magnetic properties of nickel–zinc–copper ferrites |
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Authors: | Richard Lebourgeois Sonia Duguey Jean-Pierre Ganne Jean-Marc Heintz |
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Affiliation: | 1. Thales Research and Technology, RD 128, 91767 Palaiseau, France;2. Temex Ceramics, Parc Industriel Bersol, Voie Romaine, 33600 Pessac, France;3. ICMCB, 87 Av Dr Schweitzer, 33608 Pessac, France |
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Abstract: | Additions of V2O5 were used to decrease the sintering temperature and to enhance the densification of NiZnCu ferrite. With a small amount of V2O5 (0.6–1.2 wt%) as a sintering aid, densification at low sintering temperature was observed. EDS analyses showed the presence of vanadium inside the ferrite grains. Microstructure investigation revealed heterogeneous grain size. Magnetic properties were deteriorated when increasing the V2O5 content. As a consequence, the permeability decreased and the core losses increased, which can be explained by the pinning of the domain walls to the grain defects. |
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Keywords: | Ni&ndash Zn&ndash Cu ferrite V2O5 addition Microstructure Permeability Core loss |
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