Iron oxide particles

Details Iron oxide particles Iron oxide particles

1999-06-22

2000-06-27

Gupta, Yogendra

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252 623, 252500, 423632, 423633, 423634, 427250, 2041574, 20415715, 20415141, 20415142, 20415143, 20415144, 204155, H01B 106

Patent

active

060803371

ABSTRACT:
Electromagnetic shielding material is formed from a shielding composition made with magnetic particles and a binder, where the magnetic particles have an average diameter less than about 1000 nm and are substantially crystalline. The magnetic particles can be formed from Fe.sub.2 O.sub.3, Fe.sub.3 O.sub.4, Fe.sub.3 C, or Fe.sub.7 C.sub.3. The shielding composition can be formed into a layer or into composite particles. The binder can be a metal or an electrically conducting polymer. A conducting layer can be placed adjacent to the shielding composition. The shielding material can be used to protect sensitive electronic devices. Methods are described for forming iron oxide particles by laser pyrolysis.

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