Nicuzn based ferrite and electronic component using the same

A technology of electronic components and ferrite, applied to electrical components, inductors with magnetic cores, circuits, etc., can solve problems such as improving DC superposition characteristics and not disclosing the composition of the invention

Active Publication Date: 2009-09-23
TDK CORPARATION
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  • Summary
  • 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
  • Nicuzn based ferrite and electronic component using the same
  • Nicuzn based ferrite and electronic component using the same

Examples

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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

The present invention is a NiCuZn series ferrite, which contains the following main components: 45.0-49.0 mol% of iron oxide in terms of Fe2O3; 5.0-14.0 mol% of copper oxide in terms of CuO; 1.0-32.0 mol% of zinc oxide in terms of ZnO %; in terms of NiO, nickel oxide is the balance mole %, relative to the main component, it also contains: in terms of Bi2O3, 0.25 to 0.40% by weight of bismuth oxide (excluding 0.25% by weight); in terms of SnO2, oxide 1.00 to 2.50% by weight of tin, so that the DC superposition characteristics can be greatly improved.

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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Patent Type & Authority Patents(China)
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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