Radio wave absorbent

Details Radio wave absorbent Radio wave absorbent

1999-12-02

2000-11-14

Mai, Ngoclan

Compositions

Magnetic

Iron-oxygen compound containing

C04B 3501

Patent

active

061465453

ABSTRACT:
A radio wave absorbent which comprises, as a main component, a manganese-nickel-copper-zinc system ferrite comprising 2.0 to 14.5 mol % of nickel oxide, 3.5 to 17.0 mol % of copper oxide, 30.0 to 33.0 mol % of zinc oxide, 0.5 to 10.0 mol % of manganese oxide, and 40.0 to 50.5 mol % of iron oxide. By virtue of the above-mentioned composition, the radio wave absorbent of the present invention is advantageous not only in that the reflectivity in a wide frequency band of from a low frequency is -20 dB or less, but also in that the matching thickness is small, thus enabling lowering of the production cost.

REFERENCES:
patent: 5711893 (1998-01-01), Park
patent: 5841067 (1998-11-01), Nakamura et al.

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