The invention discloses a low-loss
spinel microwave ferrite material and a preparation method thereof, and belongs to the technical field of
microwave ferrite materials, the chemical general formula of the low-loss
spinel microwave ferrite material is Ni1-a-d + e-gZnaInbDycCodSneMnfCugFe2-b-c-2e-f-deltaO4, 0 < = a < = 0.2, 0 < = b < = 0.3, 0.005 < = c < = 0.02, 0 < = d < = 0.03, 0 < = e < = 0.1, 0 < = f < = 0.1, 0 < = g < = 0.2,
delta is iron deficiency, 0 < =
delta < = 0.1, 0 < = alpha < = 0.2, 0 < = alpha < = 0.2, 0 < = alpha < = 0.2, 0 < = alpha < = 0.2, 0 < = alpha < = 0.2, 0 < = alpha < = 0.2, 0 The
sintering temperature of the
spinel NiZn gyromagnetic material is adjustable in the range of 1100-1350 DEG C, the saturation
magnetization Ms is in the range of 3000-4500 Gauss, the
ferromagnetic resonance line width H is small in the range of 150-250 Oe, the
dielectric loss is low, the
spin wave line width Hk is adjustable in the range of 10-38 Oe, and the microwave ferrite material has the advantages of being wide in
sintering temperature selectable range, small in electromagnetic loss, adjustable in
power capacity and the like. The material can be used for compounding and co-firing with
dielectric ceramic and garnet with low saturation
magnetization to prepare a
composite substrate, and the requirements of
miniaturization and
broadband of microwave devices, especially
microstrip devices, are met.