Electric-field-tunable linear unipolar magnetic switch based on a spin-valve multiferroic heterostructure
Open Access
- 1 December 2021
- journal article
- Published by IOP Publishing in Journal of Physics: Conference Series
- Vol. 2132 (1)
- https://doi.org/10.1088/1742-6596/2132/1/012040
Abstract
This work reports an energy-efficient strategy for realizing linear unipolar giant magnetoresistance (GMR) switch by using electric fields (E-fields). Herein, a modified spin-valve (SV) structure of double antiferromagnetic (AFM) pinning layers was adopted. Since the magnetization direction of ferromagnetic (FM) layer can be controlled via the strain-mediated magnetoelectric (ME) effect, a multiferroic heterostructure of SV/PMN-PT was fabricated. By applying an E-field on the PMN-PT substrate, an effective magnetic field Heff was produced along the [1-10] direction of PMN-PT. It can turn the magnetic moments of FM layer toward [1-10] direction. Accordingly, a linear GMR curve with a wide sensing field range was achieved. This E-field-induced linear magnetic switch can satisfy the demand for different switching field ranges in the same application system.This publication has 4 references indexed in Scilit:
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