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电压调控磁序的研究,对于实现超快响应、微型化和低功耗的电子器件具有重要的理论和实践意义.同时具有铁电和铁磁特性的多铁异质结可通过基于应变诱导的磁电耦合效应实现由电压调控磁特性,从而引起了学术界的广泛关注.在多铁异质结中,利用磁弹作用,电场引起的机械应变可在铁磁相中产生等效磁场,并改变其铁磁共振频率.因此,由其制备的微波器件必然满足微型化、超快响应和低功耗的要求,并可实现新的功能性.本文将从不同的方面介绍最近关于多铁体及其在微波器件中的应用等方面的工作,主要包括:具有强磁电耦合效应的新型多铁层合异质结的构建,基于多铁异质结的可调微波信号处理器的开发,以及在多铁异质结中通过铁电畴弹性反转来非易失性调控微波性质的研究.这类可调节的多铁异质结及其器件的研发为实现下一代可调磁性微波元件、超低功耗电子器件和自旋电子元器件提供了广阔的前景.
The study of voltage-controlled magnetic sequence has important theoretical and practical significance for realizing ultra-fast response, miniaturization and low power consumption of electronic devices.At the same time, ferroelectric heterojunction with ferroelectric and ferromagnetic properties can be obtained by strain induced Magnetoelectric coupling effect is realized by the voltage regulation of the magnetic properties, which has aroused widespread concern in the academic.In the multi-iron heterojunction, the use of magnetic bombs, the electric field induced mechanical strain in the ferromagnetic phase to generate equivalent magnetic field, and Change its ferromagnetic resonance frequency.Therefore, the microwave device prepared by it inevitably meet the requirements of miniaturization, ultra-fast response and low power consumption, and can achieve new functionality.This article will introduce the different aspects of the recent multi-iron body And its applications in microwave devices, etc., mainly include: the construction of a novel ferroelectric multilayered heterojunction with a strong magnetoelectric coupling effect, the development of a tunable microwave signal processor based on a ferroelectric heterojunction, As well as the non-volatile regulation of microwave properties by ferroelectric domain inversion in ferroelectric heterojunctions. The development of such adjustable ferroelectric heterojunctions and their devices has led to the development of the next generation of tunable magnetic microwave components ,ultra Low-power electronics and spin-on electronics offer broad prospects.