Abstract

This particular paper is aim at achieving NiCuZn ferrite with superior magnetic performance for the inductive wireless power charging (WPC) applications. Low-temperature-sintered xV2O5-Ni0.33Cu0.2Zn0.47Fe1.96O3.94 ferrites doped with V2O5 (0.05 wt% ≤ x ≤ 3.0 wt%) were prepared by solid-state reaction method. Influence of V2O5 additive on microstructure, magnetic properties and temperature stability of NiCuZn ferrite were investigated systematically. The fitting analysis of permeability dispersion was carried out to reveal the relationship among between domain wall motion and spin rotation. An appropriate amount of V2O5 additive adjust grain size and promote densification when sintered at 920 °C, which in turns lead to the improvement magnetization and temperature stability of NiCuZn ferrite. These results indicate that V2O5 doped NiCuZn ferrite is an excellent material for the inductive wireless charging applications.

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