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Magnetoelectric coupling composite material with adjustable resonance mode and preparation method thereof

A technology of magnetoelectric coupling and composite materials, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, magnetostrictive devices, etc., can solve the problem of single resonance mode, and achieve the effect of low price and simple preparation process

Inactive Publication Date: 2018-09-18
HUBEI UNIV
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Problems solved by technology

[0004] The object of the present invention is to solve the problem of single resonance mode of the above-mentioned composite magnetoelectric material, to provide a magnetoelectric coupling composite material with adjustable resonance mode and its preparation method. Modulation of modes, for contributions to the theory and development of multi-frequency devices

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  • Magnetoelectric coupling composite material with adjustable resonance mode and preparation method thereof
  • Magnetoelectric coupling composite material with adjustable resonance mode and preparation method thereof
  • Magnetoelectric coupling composite material with adjustable resonance mode and preparation method thereof

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Embodiment

[0023] The magnetoelectric coupling composite material maintains the thickness of Terfenol-D as 0.5mm, and the thickness of Ni is 0.2mm, 0.5mm, 1mm respectively, and the thickness ratio of the positive and negative magnetostrictive layers (Terfenol-D and Ni) is kept as Three samples of 1:0.4, 1:1, 1:2.

[0024] Step 1: Take two glass slides, one of which is cut with a glass knife into a strip with a length of 15mm, a width of 5mm, and a thickness of 1mm, that is, a strip with a size of 15mm×5mm×1mm, and then cut the slides with epoxy resin. The long glass slides are vertically glued to another glass slide to form a T-shaped structure, and left to dry for 48 hours, making 3 pieces in total.

[0025] Step 2: Bond the PZT with the size of 20mm×5mm×1mm and the Terfenol-D with the size of 15mm×5mm×0.5mm on the front of the PZT with epoxy resin adhesive, where the two ends of the PZT are respectively left 2.5mm vacant part, and then stick the nickel sheet with the size of 15mm×5mm×...

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Abstract

The invention provides a magnetoelectric coupling composite material with an adjustable resonance mode and a preparation method thereof; the magnetoelectric coupling composite material comprises a positive magnetostriction material, a piezoelectric material and a negative positive magnetostriction material layer that are stacked and fixed on a T-type structure glass substrate, thus forming a composite magnetoelectric material with a cantilever structure; the thickness ratio between the positive and negative magnetostriction materials are 1:0.4-2. Under a high or low bias magnetic field effect,the resonance mode will change along with different positive and negative magnetostriction layer thickness ratios; in preparation, the different positive and negative magnetostriction layer thicknessratios can be adjusted so as to obtain different resonance modes. Compared with other magnetoelectric coupling materials with a single resonance mode, the composite material and preparation method can change the positive and negative magnetostriction layer thickness ratios, thus effectively regulating the magnetoelectric effect resonance modes, realizing enhancement of multifrequency magnetoelectric effect under multi-resonance modes, and making contributions for multifrequency device development.

Description

technical field [0001] The invention relates to a composite material with magnetoelectric coupling effect and its preparation technology, in particular to a magnetoelectric coupling composite material with adjustable resonance mode and its preparation method. Background technique [0002] Composite magnetoelectric material is a material with magnetoelectric coupling effect, which has a good conversion function of magnetic energy and electric energy, and generates electric polarization or magnetization under the action of an external magnetic field or an external electric field, respectively. The preparation of magnetoelectric materials into magnetoelectric functional devices can be used in magnetic and electric field sensing, magnetoelectric information storage, current detection, microwave leakage detection and other technical fields. It has small size, high conversion efficiency of magnetic energy and electrical energy, easy integration, and easy Therefore, the development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/12H01L41/22H10N35/00H10N30/01
CPCH10N35/00H10N30/01
Inventor 祁亚军郑志强杨超章天金梁坤
Owner HUBEI UNIV
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