Nonvolatile Magnetoelectric Switching of Magnetic Tunnel Junctions with Dipole Interaction

Aitian Chen, Ren-Ci Peng, Bin Fang, Tiannan Yang, Yan Wen, Dongxing Zheng, Chenhui Zhang, Chen Liu, Zibin Li, Peisen Li, Yan Li, Yonggang Zhao, Ce-Wen Nan, Ziqiang Qiu, Long-Qing Chen, Xixiang Zhang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The magnetoelectric effect is technologically appealing because of its ability to manipulate magnetism using an electric field rather than magnetic field or current, thus providing a promising solution for the development of energy-efficient spintronics. Although 180° magnetization switching is vital to spintronic devices, the achievement of 180° magnetization switching via magnetoelectric coupling is still a fundamental challenge. Herein, voltage-driven full resistance switching of a magnetic tunnel junction (MTJ) with dipole interaction on a ferroelectric substrate through switchable parallel/antiparallel magnetization alignment is demonstrated. Parallel magnetization alignment along the y direction is obtained under a bias magnetic field. By rotating the magnetic easy axis via strain-mediated magnetoelectric coupling, the parallel magnetizations in the MTJ reorient to the x axis with opposite paths because of dipole interaction, thus resulting in antiparallel alignment. Moreover, this voltage switching of MTJs is nonvolatile owing to variations in dipole interaction and can be well understood via phase field simulations. The results provide an avenue to realize electrical switching of MTJs and are significant for exploring energy-efficient spintronic devices.
Original languageEnglish (US)
Pages (from-to)2213402
JournalAdvanced Functional Materials
DOIs
StatePublished - Mar 10 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-03-14
Acknowledged KAUST grant number(s): ORA-CRG10-2021-4665, ORA-CRG8-2019-4081
Acknowledgements: This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) under Award Nos. ORA-CRG8-2019-4081 and ORA-CRG10-2021-4665. R.-C.P. acknowledges support from the National Natural Science Foundation of China under Grant No. 51902247. Z.Q. acknowledges support by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Contract No. DE-AC02-05CH11231 (van der Waals heterostructures program, KCWF16). The authors acknowledge the Nanofabrication Core Lab at KAUST for their assistance. The authors would like to thank Enago (www.enago.com) for the English language review.

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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