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Oxidized magnetic material, sheet components therewith and production thereof

A technology for magnetic materials and components, applied in the fields of oxidized magnetic materials, chip components using the materials and their preparation, can solve problems affecting product reliability, achieve no eddy current loss, high sintered density, low initial magnetic The effect of conductivity

Inactive Publication Date: 2006-04-12
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inductance temperature characteristic of CoO reduction is proportional to its addition amount, and there are problems affecting product reliability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Reference is made to an embodiment of the present invention. Magnetic materials often have different frequency range characteristics depending on their composition. In the present invention, the Ni-Cu-Zn ferrite to be used in the 100 MHz or higher frequency range used in the product of the present invention is a soft ferrite in which ZnO is less and NiO is relatively more.

[0031] A kind of method that realizes the present invention is to provide in Ni-Cu-En base oxide magnetic material containing Fe 2 o 3 : 35.0-51.0% (mole), CuO: 1.0-35.0% (mole), NiO: 38.0-64.0% (mole), and ZnO: 0-10.0% (mole, including 0%).

[0032] As an impurity, Si, Al, B, Mn, Mg, Ba, Sr, Bi, Pb, W, V, or Mo may be included as long as it does not affect storage such as magnetic permeability, sintered density characteristics, or inductance temperature characteristics.

[0033] Therefore, an initial magnetic permeability of 25 or less and a sintered density of 4.75 g / cm can be obtained 3 Or high...

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PUM

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Abstract

Ni-Cu-Zn based oxide magnetic materials, in that not only the internal conductor is stabilized at very low firing temperatures, but also the characteristics in the high frequency zones of 100 MHz or higher are excellent. The oxide magnetic materials comprises, Fe2O3: 35.0 to 51.0 mol %, CuO: 1.0 to 35 mol %, NiO: 38.0 to 64.0 mol %, and ZnO: 0 to 10.0 mol % (including 0%).

Description

technical field [0001] The present invention relates to an oxidized magnetic material for a chip component such as a chip inductor or a chip gasket, or a component for shielding electromagnetic waves such as a bulk inductor, and a preparation method thereof, and a bulk coil component or laminate using the oxidized magnetic material A chip coil component and a method for producing the same, and more particularly, to an oxide magnetic material capable of being fired at the melting point of silver used as an internal conductor of a chip component or lower, and the use of an oxide magnetic material having excellent high-frequency characteristics Materials Methods of producing bulk or chip inductors. Background technique [0002] The recent remarkable development of electronic or communication equipment based on the miniaturization of electronic components (i.e. making them into thin films and improving their mounting on equipment) has established new industrial structures, but s...

Claims

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Application Information

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IPC IPC(8): H01F1/10H01F1/08H01F17/04C01G49/00C01G53/00C04B35/26C04B35/30H01F1/22H01F1/34H01F41/02H01F41/04
CPCC04B35/2666Y10T29/49075H01F41/0246H01F41/046C04B35/265Y10T29/49076H01F1/34
Inventor 小野卓也伊藤网
Owner TDK CORPARATION