| abstract |
The invention relates to a wide temperature and wide frequency MnZn power ferrite material, which relates to the technical field of ferrite material preparation. The wide-temperature and broadband MnZn power ferrite material of the present invention includes main components and additives, and is characterized in that the main components include 51.5-53.0 mol% Fe 2 O 3 and 10.0-12.0 mol% ZnO, and the rest is MnO; The weight of the main component after burning is the calculation basis, and the additives include 0.02-0.08wt% CaCO 3 , 0.01-0.05wt% Nb 2 O 5 , 0.01-0.05wt% ZrO 2 , 0.3-0.5wt% Co 2 O 3 , 0.01 ~0.02wt% NiO and 0.001~0.012wt% BTO-based PTC dielectric ceramic powder. The invention improves the stability of magnetic permeability, especially simultaneously reduces the loss in the wide temperature range of 25-140°C and the wide frequency range of 100-300kHz. |