Mn-Zn ferrite

A ferrite, manganese-zinc technology, applied in the direction of inorganic material magnetism, etc., can solve the problem of not being able to obtain high magnetic permeability characteristics at the same time
CN1400192AInactive Publication Date: 2003-03-05无锡晶石磁性电子器件有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
无锡晶石磁性电子器件有限公司
Publication Date
2003-03-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a kind of Mn-Zn ferrite, belonging to the field of oxide magnetic material technology, its main components are: Fe2O3 49-58 mole%, MnO 21-31 mole % and ZnO 15-26 mole%, and the additive component is added, they can be made into ring magnetic core whose mean grain size is 20-80 micrometer, outer diameter is 25 millimeter, inner diameter is 15 millimeter and height is 5 millimeter. In the frequency range of 1K-150 KHz its magnetic conductivity can be up to high level more than 12000, when it is used for making transformer, the number of turns can be reduced, said transformer can be miniaturized, specially, the transformer with high-frequency characteristics can be obtained in the digital transmission system of ISDN and ADSL, etc. and low volume distribution can be implemented, and the signal can be accurately transmitted.
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Description

Technical field:

[0001] The invention relates to a manganese-zinc series ferrite, which belongs to the technical field of oxide magnetic materials. technical background:

[0002] Before the present invention was made, patent application number: 98800266.3 provided manganese oxide, zinc oxide and iron oxide containing main components, additive components: silicon dioxide of 50-150ppm, calcium oxide of 50-500ppm, bismuth oxide of 50-400ppm, In the sintered oxide magnetic material of 50-400ppm molybdenum oxide, the initial magnetic permeability at 10kHz is 8500 or more in the range of -20-20°C, and 10000 or more in the range of 20-100°C, A sintered body oxide magnetic material of the above materials at 1300-1400° C., and an oxide magnetic material excellent in temperature characteristics having initial magnetic permeability by adding bismuth oxide and molybdenum oxide. Although the magnetic material described in this gazette is suitable for the pulse transformer of the S / T con...

Claims

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