In Situ Nanoscale Electric Field Control of Magnetism by Nanoionics.

Zhu, Xiaojian; Zhou, Jiantao; Chen, Lin; Guo, Shanshan; Liu, Gang; Li, Run-Wei; Lu, Wei D · Adv Mater · 2016

basic_science · Level V

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Abstract

Direct, nonvolatile, and reversible control of nanomagnetism in solid-state ferromagnetic thin films is achieved by controlling the chemical composition of the film through field-driven ion redistribution. The electric field-driven de-intercalation/intercalation of lithium ions can result in ≈100% modulation of the magnetization and drives domain wall motion over ≈100 nm. High-speed and multilevel magnetic information storage is further demonstrated.