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

A technology of hexagonal ferrite and magnetization, which is applied in the manufacture of inductors/transformers/magnets, magnetic objects, magnetic materials, etc., can solve the problems of insufficient saturation magnetization and limited performance of hexagonal ferrite, and achieve the purpose of changing the exchange effect , the effect of increasing the saturation magnetization and high local average magnetic moment

Active Publication Date: 2022-07-19
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 preparation method of high saturation magnetization Z-type hexagonal ferrite powder, wherein, 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, add alcohol and ball milling beads to the ball mill, then place the ball mill on a ball mill for ball milling, and obtain a mixed solution after ball milling. min, the ball milling time is 10 hours;

[0029] (3) The mixed solution after ball milling is placed in a mortar, and the mortar is dried in a dryer to obtain the first powder. The drying temperature is controlled to be 90°C, and the drying tim...

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 preparation method of high saturation magnetization Z-type hexagonal ferrite powder, wherein, 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, add alcohol and ball milling beads to the ball mill, then place the ball mill on a ball mill for ball milling, and obtain a mixed solution after ball milling. min, the ball milling time is 10h;

[0038] (3) The mixed solution after ball milling is placed in a mortar, and the mortar is dried in a dryer to obtain the first powder. The drying temperature is controlled to be 90°C, and 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 preparation method of high saturation magnetization Z-type hexagonal ferrite powder, wherein, 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, add alcohol and ball milling beads to the ball mill, then place the ball mill on a ball mill for ball milling, and obtain a mixed solution after ball milling. min, the ball milling time is 10h;

[0047] (3) The mixed solution after ball milling is placed in a mortar, and the mortar is dried in a dryer to obtain the first powder. The drying temperature is controlled to be 90°C, and the dr...

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Abstract

The invention provides a high saturation magnetization Z-type hexagonal ferrite powder, and the structure of the high-saturation magnetization Z-type hexagonal ferrite powder 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, and the elements of A and B are different, x is the atomic ratio content of B, 0≤x≤2. The high saturation magnetization Z-type hexagonal ferrite powder of the present invention and the preparation method thereof change the electronic environment around Fe ions by adding A and B ions, thereby changing the ratio of adjacent positive and negative oriented Fe ions, and further changing the The exchange effect between adjacent positive and negative oriented Fe ions is improved, resulting in a higher local average magnetic moment and an increase in the saturation magnetization.

Description

technical field [0001] The invention relates to the technical field of ferrites, in particular to a high saturation magnetization Z-type hexagonal ferrite powder 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 places higher requirements on the frequency of use of magnetic material components in the device. For magnetic components, part of the device is used for microwave signal transmission, but the other part is used for isolation and shielding of microwave signals. For materials used for shielding function, the initial permeability and saturation magnetization of the magnetic material 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 plane anisotropy at room...

Claims

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Application Information

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Patent Type & Authority Patents(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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