首页|High frequency characteristic of elements substituted hexagonal ferrites
High frequency characteristic of elements substituted hexagonal ferrites
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NETL
NSTL
Trans Tech Publications Ltd
The initial permeability μ' (at 0.1 GHz) of Ba_3Co_2R_(0.1)Fe_(23.9)O_(41) (x=0.1, R= Gd, Dy, Ho, Yb) samples is higher than that of the Co_2Z ferrite without substitution. In particular, μ' of Gd~(3+) substituted Z-type ferrite sample (x=0.1) is the highest of all samples. The substituted sample of Ba_3Co_2Ti_xZn_xFe_(24-2x)O_(41) with x= 0.85 has a maximum μ' of 24, which is twice as large as that of the non-substituted sample with x=0. Ba_3Co_(2-2x) Li_xFe_(24+x)O_(41)(x=0-1.0) are also prepared. The sample with x=0 shows μ'of 8 at 50MHz. The maximum μ' is 24.5 at x=0.3. An apparent magnetic anisotropy constant K~*, calculated by using H_a~* and Ms, decreases. Therefore, the decrease of the magnetic anisotropy contributes to the increase of μ'.
soft magnetic propertyhexagonal ferriteinitial permeabilityhigh frequency characteristic
NETL
NSTL
Trans Tech Publications Ltd
