Ten States of Nonvolatile Memory through Engineering Ferromagnetic Remanent Magnetization

Hai Zhong, Yan Wen, Yuelei Zhao, Qiang Zhang, Qikun Huang, Yanxue Chen, Jianwang Cai, Xixiang Zhang, Run-Wei Li, Lihui Bai, Shishou Kang, Shishen Yan, Yufeng Tian

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Emerging nonvolatile multilevel memory devices have been regarded as a promising solution to meet the increasing demand of high-density memory with low-power consumption. In particular, decimal system of the new computers instead of binary system could be developed if ten nonvolatile states are realized. Here, a general remanent magnetism engineering method is proposed for realizing multiple reliable magnetic and resistance states, not depending on a specific material or device structure. Especially, as a proof-of-concept demonstration, ten states of nonvolatile memory based on the manipulation of ferromagnetic remanent magnetization have been revealed in both Co/Pt magnetic multilayers with strong perpendicular magnetic anisotropy and MgO-based magnetic tunneling junctions at room temperature. Considering ferromagnets have been one of the key factors that enabled the information revolution from its inception, this state-of-the-art remanent magnetism engineering approach has a very broad application prospect in the field of spintronics.
Original languageEnglish (US)
Pages (from-to)1806460
JournalAdvanced Functional Materials
Volume29
Issue number2
DOIs
StatePublished - Nov 14 2018

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