Magneto-ionic enhancement and control of perpendicular magnetic anisotropy
Name
222402_1_online.pdf
Description
Published version
Size
1.79 MB
Format
Adobe PDF
Checksum (MD5)
f020378db5fb3781d4e284a9b07e12c3
Author(s)
Kossak, Alexander E
Wolf, Daniel
Beach, Geoffrey SD
Date Issued
November 29, 2022
Journal
Applied Physics Letters
Publisher
AIP Publishing
Citation
Alexander E. Kossak, Daniel Wolf, Geoffrey S. D. Beach; Magneto-ionic enhancement and control of perpendicular magnetic anisotropy. Appl. Phys. Lett. 28 November 2022; 121 (22): 222402.
Version
Final published version
Abstract
Magneto-ionic control of magnetic anisotropy is an emerging voltage-controlled approach that aims to offer much lower power consumption than current-controlled manipulation of magnetization. Moreover, magneto-ionic systems are ideal candidates for non von Neumann computing architectures, such as neuromorphic and stochastic computing due to their non-volatile and analog nature. One of the key metrics to quantify the efficiency of voltage-controlled magnetic anisotropy (VCMA) is the magneto-electric voltage coefficient (ΔHc/|ΔV|). Here, we show greater than one order of magnitude improvement in this efficiency compared to existing solid-state systems using a Co/Pd multilayer heterostructure. By performing a systematic study of the Co thickness, the Pd thickness, and the number of repeat units of engineered Co/Pd multilayers, we identify a narrow bandwidth of the Co thickness from 2–2.5 Å, Pd thickness from 1.4–1.7 nm, and repeat units from 7–9, to maximize the VCMA. Compared to rivaled liquid electrolyte systems, this platform has the advantage of faster speeds and easier integration for on-chip logic and memory devices.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/5.0121767
