Voltage Control of Magnetic Anisotropy through Ionic Gel Gating for Flexible Spintronics

  • Chenying Wang
  • , Hongjia Zhang
  • , Chunlei Li
  • , Yun He
  • , Le Zhang
  • , Xinger Zhao
  • , Qu Yang
  • , Dan Xian
  • , Qi Mao
  • , Bin Peng
  • , Ziyao Zhou
  • , Wanzhao Cui
  • , Zhongqiang Hu

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

In spite of recent rapid development of flexible electronics, voltage-tunable spintronic structures and devices on flexible substrates have been rarely studied. Here, voltage control of magnetic anisotropy (VCMA) is demonstrated via ionic gel (IG) gating on flexible polyimide substrates with a circuit operating voltage of 1.8 V. A reversible, nonvolatile VCMA switching of 114 Oe is achieved in Pt/Fe/Pt multilayer, where the spatial magnetic anisotropy distribution is determined quantitatively by electron spin resonance technique. This IG gating process is repeatable as the substrates are under different bending conditions. The voltage modulation of magnetic anisotropy through IG gating with excellent flexibility proposes potential applications in low-power wearable spintronic devices.

Original languageEnglish
Pages (from-to)29750-29756
Number of pages7
JournalACS Applied Materials and Interfaces
Volume10
Issue number35
DOIs
StatePublished - 5 Sep 2018
Externally publishedYes

Keywords

  • ferromagnetic resonance
  • flexible spintronics
  • ionic gel gating
  • magnetoelectric coupling
  • voltage control of magnetism

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