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1 549 387

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Application

4433570/02, 1988-05-31

(22)

Actual filing date

1988-05-31

(45)

Published

1994-11-30

(72)

Inventor

Ivanova I.N.Golubkov L.A.Jakovleva S.A.Baryshnikov N.V.Smirnova O.I.Lapshina I.E.Kataev A.Arzhannikov A.B.

MIXTURE FOR PRODUCTION OF POLYCRYSTALLINE HEXAFERRITE Russian patent published in 1994 - IPC

Abstract SU 1549387 A1

FIELD: electronics. SUBSTANCE: invention relates to composition of mixture for production of strontium hexaferrite. Proposed mixture includes oxide compound of iron with proportion of Fe₂O₃ : FeO=1:(0.43-0.47) and strontium carbonate which is mixed chemically with 1.5-2.5 per cent be mass of lanthanum (in terms of oxide). Strontium hexaferrite with residual induction Br= 3920-4100 Gs, coercive force H=2100-2450 Oe and magnetic energy BH_max= 3.52-3.78 MGs.Oe is produced with use of proposed mixture. Process of production of hexaferrite is simplified due to improvement of technological characteristics of mixture. EFFECT: increased magnetic characteristics of hexaferrite and simplified technology of its production. 1 tbl

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SU 1 549 387 A1

Authors

Ivanova I.N.

Golubkov L.A.

Jakovleva S.A.

Baryshnikov N.V.

Smirnova O.I.

Lapshina I.E.

Kataev A.

Arzhannikov A.B.

Dates

1994-11-30—Published

1988-05-31—Filed