Engineering and Technology

An energy efficient way for quantitative magnetization switching

X. Li, H. Singh, et al.

This groundbreaking study led by Xin Li and his team reveals a highly energy-efficient technique for controlling magnetization switching through spin orbit torque devices made from multiferroic composites. By utilizing an out-of-plane electric field, they achieve precise modulation of magnetization with drastically reduced energy consumption, opening doors for the next generation of spin logic devices.

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Abstract

This study demonstrates a highly energy-efficient method for quantitative magnetization switching using spin orbit torque (SOT) devices fabricated from multiferroic composites. By applying an out-of-plane electric field to a piezoelectric substrate, localized in-plane strain precisely modulates magnetization switching via the SOT effect. Harmonic Hall measurements, XMCD-PEEM, XRD, MFM, and micromagnetic simulations confirm that electric-field-induced strain enables precise control of SOT-induced magnetization switching with significantly reduced energy consumption (around 200 fJ per operation). This approach holds significant potential for next-generation spin logic devices.

Publisher

npj Spintronics

Published On

Jul 17, 2024

Authors

Xin Li, Hanuman Singh, Jie Lin, Shuai Zhang, Bao Yi, Jyotirmoy Chatterjee, Zhuyun Xiao, Sucheta Mondal, Nobumichi Tamura, Rob N. Candler, Long You, Jeffrey Bokor, Jeongmin Hong