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A kind of anti-electromagnetic interference soft magnetic particle film and preparation method thereof

A technology of anti-electromagnetic interference and granular film, which is applied in the manufacture of inductors/transformers/magnets, circuits, electrical components, etc.

Active Publication Date: 2021-08-20
安徽智磁新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the high-density and wide-spectrum electromagnetic signals generated by the current integrated electronic devices during operation fill the entire space and form a complex electromagnetic environment, which requires electronic equipment and power supplies to operate in various frequency bands and operating temperature ranges. It has good electromagnetic compatibility, which brings a series of challenges to anti-electromagnetic interference technology

Method used

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  • A kind of anti-electromagnetic interference soft magnetic particle film and preparation method thereof
  • A kind of anti-electromagnetic interference soft magnetic particle film and preparation method thereof
  • A kind of anti-electromagnetic interference soft magnetic particle film and preparation method thereof

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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, it is an anti-electromagnetic interference soft magnetic granular film provided in this embodiment. The soft magnetic granular film has a 9-layer structure, which is the middle dual-phase nanocrystalline soft magnetic film 1 and the dual-phase nanocrystalline soft magnetic film 1. The two overlapping repeating structures 2 on both sides include a layer of nano-ZnO layer 2-1 and a layer of nano-hexagonal boron nitride layer 2-2, and the two overlapping repeating structures 2 are located in the middle of the dual-phase nanocrystalline soft magnetic film 1 On the upper and lower sides of the upper and lower sides, an overlapping repeating structure 2 is a layer of nano-ZnO layer 2-1 located on the upper side of a layer of nano-hexagonal boron nitride layer 2-2, and the upper side of the dual-phase nanocrystalline soft magnetic film 1 is nano-hexagonal Boron nitride layer 2-2, the lower side of the dual-phase nanocrystalline soft magnetic film 1 i...

Embodiment 2

[0039] Such as figure 2 As shown, it is an anti-electromagnetic interference soft magnetic granular film provided in this embodiment. The soft magnetic granular film has a 13-layer structure, which is the middle dual-phase nanocrystalline soft magnetic film 1 and the dual-phase nanocrystalline soft magnetic film 1. Three overlapping repeating structures 2 on both sides, one overlapping repeating structure 2 includes a layer of nano-ZnO layer 2-1 and a layer of nano-hexagonal boron nitride layer 2-2, and three overlapping repeating structures 2 are located in the middle On the upper and lower sides of the dual-phase nanocrystalline soft magnetic film 1, an overlapping and repeating structure 2 is a layer of nano-ZnO layer 2-1 located on the upper side of a layer of nano-hexagonal boron nitride layer 2-2, and the middle dual-phase nano The upper side of the crystalline soft magnetic film 1 is a nano-hexagonal boron nitride layer 2-2, and the lower side of the dual-phase nano-cr...

Embodiment 3

[0048] Such as image 3As shown, a kind of anti-electromagnetic interference soft magnetic granular film provided in this embodiment is characterized in that the soft magnetic granular film has a 16-layer structure, which is the middle two-phase nanocrystalline soft magnetic thin film 1 and the two-phase nanocrystalline soft magnetic film 4 overlapping repeating structures 2 on both sides of the soft magnetic film 1, 1 overlapping repeating structure 2 includes a nanometer ZnO layer 2-1 and a nanometer hexagonal boron nitride layer 2-2, 4 overlapping repeating structures 2 On the upper and lower sides of the dual-phase nanocrystalline soft magnetic film 1 located in the middle, an overlapping and repeating structure 2 is a layer of nano-ZnO layer 2-1 located on the upper side of a layer of nano-hexagonal boron nitride layer 2-2, in the middle The upper side of the dual-phase nanocrystalline soft magnetic film 1 is a nano-hexagonal boron nitride layer 2-2, and the lower side of...

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Abstract

The invention provides an anti-electromagnetic interference soft magnetic granular film and a preparation method thereof. The soft magnetic granular film has a multilayer structure, which is a two-phase nanocrystalline soft magnetic film in the middle and a soft magnetic film located in the two-phase nanocrystalline soft magnetic film. A plurality of overlapping repeating structures on both sides, the overlapping repeating structures comprising a layer of nano-ZnO layer and a layer of nano-hexagonal boron nitride; the structural formula of the dual-phase nanocrystalline soft magnetic film is ((Fe z A 1‑z ) a co b Q c Ba d ) 1‑x -(RO 2 ) x ; The dual-phase nanocrystalline soft magnetic thin film is α-(Fe of bbc structure z A 1‑z ) a co b Q c Ba d Nano metal particles were RO 2 Insulating dielectric nanoparticle wrapping structure. The present invention adds RO 2 Doping the α‑(Fe z A 1‑z ) a co b Q c Ba d Nano-metals can effectively reduce the coercive force, improve the soft magnetic properties, and help the grain refinement of the film.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic materials, and in particular relates to an anti-electromagnetic interference soft magnetic granular film and a preparation method thereof. Background technique [0002] With the development of science and technology, communication technologies such as mobile phones and high-speed wireless local area networks have realized real-time communication between people anywhere and anyone, and at the same time, the data transmission rate of wireless communication technology has reached the frequency band. For example, the working frequency band of Bluetooth is in. In order to achieve higher and faster mobility of wireless systems, wireless mobile devices are rapidly developing toward smaller and miniaturized devices. The radio frequency circuit, which is composed of the transmission circuit and the receiving circuit, is the core component of the wireless system. Due to the high integration of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/33H01F41/00H05K9/00C23C14/06C23C14/34C23C24/04C23C28/00
CPCC23C14/0688C23C14/3464C23C24/04C23C28/324C23C28/345C23C28/42H01F1/33H01F41/00H05K9/0088
Inventor 邓毕力潘振海王玉川徐敏义罗顶飞晋立从张朋王波
Owner 安徽智磁新材料科技有限公司