Micro-nano magnetoelectric coupler based on ferroelectric film and self-assembly magnetic nanometer particle structure

Abstract

In order to solve the problem that high-performance micro-nano magnetoelectric coupler can not be easily manufactured under control, the invention provides a magnetoelectric coupler with a ferroelectric film and a self-assembly magnetic nanometer particle structure. The magnetoelectric coupler is manufactured in such a manner that the ferroelectric film is subjected to graphical +Z and -Z ferroelectric domain processing through piezoresponse force microscopy technology, and self-assembly magnetic metallic nanometer particles are polarized on the ferroelectric domain surface through photochemical sedimentation. The coupler comprises a ferroelectric film layer, a conductive substrate supporting the ferroelectric film, and a self-assembled magnetic nanometer particle structure on the ferroelectric film layer. micro-nano-level PZT ferroelectric domain with polarized distribution according to any graphs is processed through piezoresponse force microscopy technology, and the magnetic metallic nanometer particle structure is self-assembled through photochemical sedimentation. The production technology is simple, and the integrated production of micro-nano magnetoelectric couplers is facilitated.

Description

technical field [0001] The invention relates to a magnetoelectric coupling device, in particular to a magnetoelectric coupling device, which is patterned and polarized on a ferroelectric thin film by piezoelectric force response microscopy, and self-assembled magnetic nanoparticle structure is deposited on the polarized micro-region. electrically coupled devices. Background technique [0002] The magnetoelectric coupling effect is a phenomenon in which materials generate magnetic polarization (electrical polarization) under the action of an electric field (magnetic field). Magnetoelectric materials have a broad application prospect in the field of sensors because they have ferroelectricity, ferromagnetism, and ferroelasticity, and can produce magnetoelectric coupling effects. The magnetoelectric coupling effect has great potential application value in energy harvesting and conversion devices, magnetic detection and sensor devices, tunable microwave devices, information stor...

AI Technical Summary

Problems solved by technology

At present, there are many types of magnetoelectric coupling devices made of magnetoelectric composite materials, but the performance of magnetoelectric coupling devices is greatly affected by the preparation, and the controllability during the preparation process is poor, and the design of integrated preparation is poor.

The layered magnetoelectric composite material produced by the commonly used compression bonding method has many phase interface defects, poor microscopic controllability and complicated process in the preparation process; and operation requirements are very high; the process of preparing and processing devices based on these materials will affect the performance of magnetoelectric materials, and it is difficult to carry out controllable integrated preparation

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