High-saturation magnetization Z-type hexagonal ferrite powder and preparation method thereof

A hexagonal ferrite, magnetization technology, applied in the direction of inductor/transformer/magnet manufacturing, magnetic objects, magnetic materials, etc., can solve the problem of hexagonal ferrite saturation magnetization is not high enough, limited performance and other issues

Active Publication Date: 2021-05-28
WUXI JIEFU ELECTROACOUSTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the current common (Ba,Sr) 3 co 2 Fe 24 o 41 The saturation magnetization of hexagonal ferrite at room temperature is not high enough, which limits its performance in devices

Method used

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  • High-saturation magnetization Z-type hexagonal ferrite powder and preparation method thereof
  • High-saturation magnetization Z-type hexagonal ferrite powder and preparation method thereof
  • High-saturation magnetization Z-type hexagonal ferrite powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high saturation magnetization Z-type hexagonal ferrite powder, the structure of the high saturation magnetization Z-type hexagonal ferrite powder is Sr 3 co 2 Fe 24 o 41 .

[0026] A method for preparing Z-type hexagonal ferrite powder with high saturation magnetization, comprising the following steps:

[0027] (1) with high-purity SrCO 3 、Co 2 o 3 , Fe 2 o 3 The powder is the raw material, and each raw material is weighed according to the atomic molar ratio in the molecular formula;

[0028] (2) Mix the weighed raw materials and place them in a ball mill jar, and add alcohol and ball milling beads into the ball mill jar, then put the ball mill jar on a ball mill for ball milling, after ball milling, a mixed solution is obtained, and the speed of the ball mill is 500 R / min, the ball milling time is 10 hours;

[0029] (3) Put the mixed solution after ball milling into a mortar, put the mortar into a dryer to dry to obtain the first powder, control the drying...

Embodiment 2

[0034] A high saturation magnetization Z-type hexagonal ferrite powder, the structure of the high saturation magnetization Z-type hexagonal ferrite powder is Sr 3 co 1.6 Zn 0.4 Fe 24 o 41 .

[0035] A method for preparing Z-type hexagonal ferrite powder with high saturation magnetization, comprising the following steps:

[0036] (1) with high-purity SrCO 3 、Co 2 o 3 , ZnO, Fe 2 o 3 The powder is the raw material, and each raw material is weighed according to the atomic molar ratio in the molecular formula;

[0037] (2) Mix the weighed raw materials and place them in a ball mill jar, and add alcohol and ball milling beads into the ball mill jar, then put the ball mill jar on a ball mill for ball milling, after ball milling, a mixed solution is obtained, and the speed of the ball mill is 500 R / min, ball milling time is 10h;

[0038] (3) Put the mixed solution after ball milling into a mortar, put the mortar into a dryer to dry to obtain the first powder, control the ...

Embodiment 3

[0043] A high saturation magnetization Z-type hexagonal ferrite powder, the structure of the high saturation magnetization Z-type hexagonal ferrite powder is Sr 3 co 1.2 Zn 0.8 Fe24 o 41 .

[0044] A method for preparing Z-type hexagonal ferrite powder with high saturation magnetization, comprising the following steps:

[0045] (1) with high-purity SrCO 3 、Co 2 o 3 , ZnO, Fe 2 o 3 The powder is the raw material, and each raw material is weighed according to the atomic molar ratio in the molecular formula;

[0046] (2) Mix the weighed raw materials and place them in a ball mill jar, and add alcohol and ball milling beads into the ball mill jar, then put the ball mill jar on a ball mill for ball milling, after ball milling, a mixed solution is obtained, and the speed of the ball mill is 500 R / min, ball milling time is 10h;

[0047] (3) Put the mixed solution after ball milling into a mortar, put the mortar into a dryer to dry to obtain the first powder, control the dr...

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Abstract

The invention provides high-saturation magnetization Z-type hexagonal ferrite powder. The structure of the Z-type hexagonal ferrite powder with high saturation magnetization intensity is Sr<3>(A<2-x>B<x>)Fe<24>O<41>, A and B are one of Co element, Mg element, Zn element and Cr element, A and B are different, x is the atomic ratio content of B, and x is greater than or equal to 0 and less than or equal to 2. According to the Z-type hexagonal ferrite powder with high saturation magnetization and the preparation method thereof disclosed by the invention, the electronic environment around Fe ions is changed by adding A and B ions, so that the proportion of adjacent forward and reverse orientation Fe ions is changed, and the exchange action between the adjacent forward and reverse orientation Fe ions is further changed, and thus a higher local average magnetic moment is generated, and the saturation magnetization intensity is improved.

Description

technical field [0001] The invention relates to the technical field of ferrite, in particular to Z-type hexagonal ferrite powder with high saturation magnetization and a preparation method thereof. Background technique [0002] With the development of 5G and millimeter wave communications, microwave devices are developing towards higher frequency bands. This puts forward higher requirements on the frequency of use of the magnetic material components in the device. For magnetic components, some devices are used for microwave signal transmission, but the other part is used for isolation and shielding of microwave signals. For materials used for shielding functions, the initial permeability and saturation magnetization of magnetic materials need to be as high as possible. At the same time, the material also needs to have suitable electrical properties. [0003] Previous studies have shown that Z-type hexagonal ferrite (Ba,Sr) 3 Me 2 Fe 24 o 41 It has planar anisotropy at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/626H01F1/03H01F41/02
CPCC04B35/2633C04B35/62605H01F1/0315H01F41/02C04B2235/3213C04B2235/3275C04B2235/3284
Inventor 汤如俊蒋加星
Owner WUXI JIEFU ELECTROACOUSTIC
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