Ferrite magnetic material and manufacturing method thereof

A technology of magnetic material and ferrite, applied in the field of ferrite, can solve the problems of high magnetic permeability and low magnetic loss, and achieve the effect of improving magnetic properties, increasing magnetic permeability and reducing lattice strain

CN112430075AInactive Publication Date: 2021-03-02江西耀润磁电科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-03-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of ferrites, and particularly relates to a ferrite magnetic material which comprises main components, auxiliary components and additives, the main components comprise Fe2O3, Mo2O3, Yb2O3, NiO and ZnO, and the auxiliary components comprise WO3 and Nd2O3. Based on the main component amount, the content of Fe2O3 in the main components is 48-52 mol%, the content of Mo2O3 in the main components is 16-24 mol%, the content of Yb2O3 in the main components is 12-20 mol%, the content of NiO in the main components is 9-15 mol%, and the content of ZnO in the main components is 6-10 mol%. Based on the weight of the main components, the content of WO3 is 0.1-1wt%, and the content of Nd2O3 is 0.1-1wt%. The additives are composed of V2O5, SiO2 and CuO. The ferrite material disclosed by the invention has higher magnetic conductivity and lower magnetic loss at the same time under 13.56 MHz, and meets the application requirements of NFC.
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Description

technical field

[0001] The invention belongs to the technical field of ferrite, and in particular relates to a ferrite magnetic material and a manufacturing method thereof. Background technique

[0002] In the application of 13.56MHz RFID electronic tags, the electronic tags need to be attached to the metal surface or near the position, so that during the identification process, the signal strength is greatly weakened by the metal eddy current attenuation, resulting in the failure of the reading process. Therefore, it is necessary to add a thin magnetic To reduce the eddy current effect, the higher the magnetic permeability of the magnetic sheet, the better the conduction effect. But generally speaking, materials with high magnetic permeability also have large losses, which is not conducive to the use in NFC antenna modules.

[0003] At present, in the existing technology, the magnetic permeability is mostly controlled at about 100. Although it can meet the requirements of ...

Examples

Embodiment 1

[0025] A ferrite magnetic material comprising a main component, an auxiliary component and an additive, the main component including Fe 2 o 3 、Mo 2 o 3 , Yb 2 o 3 , NiO and ZnO, the auxiliary components include WO 3 and Nd 2 o 3 ; Taking the amount of the main component as a benchmark, Fe in the main component 2 o 3 The content is 50mol%, Mo 2 o 3 The content is 20mol%, Yb 2 o 3 The content of NiO is 14mol%, the content of NiO is 10mol%, and the content of ZnO is 6mol%. Based on the weight of the main component, the WO in the auxiliary component 3 The content is 0.52wt%, Nd 2 o 3 The content of is 0.48wt%; The additive consists of V 2 o 5 , SiO 2 and CuO in a weight ratio of 1:2.5:1.5, and the additive accounts for 0.32wt% of the total weight percentage of the entire material.

[0026] The preparation method of above-mentioned ferrite magnetic material, comprises the steps:

[0027] S1. Mix, weigh Fe by molar percentage 2 o 3 、Mo2 o 3 , Yb 2 o 3 , NiO a...

Embodiment 2

[0039] A ferrite magnetic material comprising a main component, an auxiliary component and an additive, the main component including Fe 2 o 3 、Mo 2 o 3 , Yb 2 o 3 , NiO and ZnO, the auxiliary components include WO 3 and Nd 2 o 3 ; Taking the amount of the main component as a benchmark, Fe in the main component 2 o 3 The content is 52mol%, Mo 2 o 3 The content is 16mol%, Yb 2 o 3 The content of NiO is 12mol%, the content of NiO is 12.5mol%, and the content of ZnO is 7.5mol%. Based on the weight of the main component, WO 3 The content is 0.26wt%, Nd 2 o 3 The content is 0.15wt%; the additive consists of V 2 o 5 , SiO 2 and CuO in a weight ratio of 1:3:1, and the additive accounts for 0.5wt% of the total weight percentage of the entire material.

[0040] The preparation method of above-mentioned ferrite magnetic material, comprises the steps:

[0041] S1. Mix, weigh Fe by molar percentage 2 o 3 、Mo 2 o 3 , Yb 2 o 3 , NiO and ZnO, put them into a vibration...

Embodiment 3

[0053] A ferrite magnetic material comprising a main component, an auxiliary component and an additive, the main component including Fe 2 o 3 、Mo 2 o 3 , Yb 2 o 3 , NiO and ZnO, the auxiliary components include WO 3 and Nd 2 o 3 ; Taking the amount of the main component as a benchmark, Fe in the main component 2 o 3 The content is 48mol%, Mo 2 o 3 The content is 24mol%, Yb 2 o 3 The content of NiO is 12mol%, the content of NiO is 9mol%, and the content of ZnO is 7mol%. Based on the weight of the main component, the WO in the auxiliary component 3 The content is 0.62wt%, Nd 2 o 3 The content of is 0.12wt%; The additive consists of V 2 o 5 , SiO 2 and CuO in a weight ratio of 1:2:2, and the additive accounts for 0.25wt% of the total weight percentage of the entire material.

[0054] The preparation method of above-mentioned ferrite magnetic material, comprises the steps:

[0055] S1. Mix, weigh Fe by molar percentage 2 o 3 、Mo 2 o 3 , Yb 2 o 3 , NiO and ...