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Self-biased magnetoelectric composite material structure and assembly method thereof

A magnetoelectric composite material and assembly method technology, applied in the direction of material selection for magnetostrictive devices, device material selection, manufacture/assembly of magnetostrictive devices, etc., can solve the problem of interfering with the normal operation of the device and increasing the volume of the device and structural complexity, etc., to achieve the effect of simple structure, strong magnetoelectric effect, and precise assembly

Pending Publication Date: 2021-03-12
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Abstract
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Problems solved by technology

On the one hand, this static magnetic field device greatly increases the volume and structure complexity of the device. On the other hand, the static magnetic field device will also introduce electromagnetic noise, which interferes with the normal operation of the device.

Method used

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  • Self-biased magnetoelectric composite material structure and assembly method thereof
  • Self-biased magnetoelectric composite material structure and assembly method thereof
  • Self-biased magnetoelectric composite material structure and assembly method thereof

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] see figure 1 and figure 2 As shown, the self-biased magnetoelectric composite material structure provided by an embodiment of the present invention includes a magnetostrictive material 1 and a piezoelectric ceramic material 2, wherein the magnetostrictive material 1 is annular, and the piezoelectric ceramic material 2 is Ring-shaped...

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Abstract

The invention relates to the technical field of magnetoelectric composite material structures, in particular to a self-biased magnetoelectric composite material structure and an assembly method thereof. The self-biased magnetoelectric composite material structure comprises a magnetostrictive material and a piezoelectric ceramic material, and the piezoelectric ceramic material is coaxially embeddedin an annular hole of the magnetostrictive material and is in interference fit with the magnetostrictive material. The self-biased magnetoelectric composite material structure can generate a strongermagnetoelectric effect without providing a specific static magnetic field, and the structure is simple. According to the assembly method, the magnetostrictive material is heated to expand, and then the piezoelectric ceramic material is coaxially embedded in the annular hole of the magnetostrictive material, so that the assembly of the self-biased magnetoelectric composite material structure can be better and accurately realized.

Description

technical field [0001] The invention relates to the technical field of magnetoelectric composite material structures, in particular to a self-biased magnetoelectric composite material structure and an assembly method thereof. Background technique [0002] Magnetoelectric composite materials have a wide range of applications, and they can be the core components of magnetic sensors, current sensors, nonvolatile memories, and transducers. However, magnetoelectric materials need to be in the optimal static magnetic field to achieve considerable magnetoelectric effect. The reason for this problem is that the static magnetic field is also called the bias magnetic field, which adjusts the magnetostrictive properties of the ferromagnetic phase by biasing the magnetization state of the ferromagnetic phase, and makes the compression of the material near the optimal static magnetic field of the material. The magnetic coefficient is the largest, and then reaches the peak value of the m...

Claims

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Application Information

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IPC IPC(8): H01L41/20H01L41/12H01L41/47
CPCH10N35/00H10N35/85H10N35/01
Inventor 井文奇杜逸飞张涛魏洪峰田智立李卓达夏雅男刘雷波
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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