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Nicuzn based ferrite and electronic component using the same

A technology of electronic components and ferrites, which is applied in electrical components, inductors with magnetic cores, circuits, etc., can solve the problems of not disclosed invention composition, not improving DC superposition characteristics, etc.

Active Publication Date: 2007-06-27
TDK CORPARATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the purpose of the technology disclosed in the publication is not to improve the DC superposition characteristics, and the composition of the present invention is not disclosed in the specific examples of the publication.

Method used

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  • Nicuzn based ferrite and electronic component using the same

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Embodiment Construction

[0014] Hereinafter, the NiCuZn-based ferrite (oxide magnetic material) of the present invention will be described in detail.

[0015] For the substantial main component in the NiCuZn system ferrite of the present invention contains: Fe 2 o 3 Contains 45.0-49.0 mol% of iron oxide (especially preferably 47.0-48.8 mol%); 5.0-14.0 mol% of copper oxide as CuO (especially 7.0-12 mol%); 1.0-32.0 mol of zinc oxide as ZnO % (particularly preferably 14.0 to 28.0 mol%); NiO contains nickel oxide as the balance mol%.

[0016] Furthermore, in the NiCuZn-based ferrite of the present invention, with respect to the main component, as a subcomponent, Bi 2 o 3 Calculated, bismuth oxide is greater than 0.25% by weight, 0.40% by weight or less (especially preferably 0.26~0.33% by weight); 2 In total, tin oxide is 1.00 to 2.50% by weight (especially preferably 1.00 to 2.20% by weight).

[0017] For the composition range of the above-mentioned main components, if iron oxide (Fe 2 o 3 ) conte...

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Abstract

An NiCuZn-base ferrite of the invention comprises as main components an iron oxide in an amount of 45.0 to 49.0 mol % on Fe2O3 basis, an copper oxide in an amount of 5.0 to 14.0 mol % on CuO basis and a zinc oxide in an amount of 1.0 to 32.0 mol % on ZnO basis with a nickel oxide accounting for the rest mol % on NiO basis. With respect to the main components, a bismuth oxide is contained in an amount of 0.25 exclusive to 0.40% by weight on Bi2O3 basis, and a tin oxide is contained in an amount of 1.00 to 2.50% by weight on SnO2 basis. The invention ensures a leap upward in direct-current bias characteristics.

Description

technical field [0001] The present invention relates to a NiCuZn-based ferrite, and an electronic component manufactured using the same. In particular, it relates to a ferrite used as a material of an electronic component forming a closed magnetic circuit, and an electronic component manufactured using the same. Background technique [0002] So far, ferrite, as a magnetic material containing oxides such as Ni, Cu, and Zn, has been used as a core (magnetic core) material for various electronic components, or a laminated chip inductor, etc., due to its excellent magnetic properties. Materials for inductor parts, etc. [0003] Considering that this magnetic core or inductor component will be used in various temperature environments, it is required that the rate of change of the initial magnetic permeability μi relative to the temperature change is small, that is, the temperature characteristic of the initial magnetic permeability μi is good (relative to the temperature little ...

Claims

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Application Information

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IPC IPC(8): H01F1/34C04B35/30H01F17/00
CPCH01F17/04C04B2235/3281C04B35/62655C04B2235/3284C04B2235/3279H01F1/344C04B2235/656C04B2235/3293C04B35/62685C04B35/265C04B2235/3298C04B35/63416C04B35/26
Inventor 和田龙一青木卓也桃井博高桥幸雄佐藤高弘
Owner TDK CORPARATION
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