Giant voltage-induced modification of magnetism in micron-scale ferromagnetic metals by hydrogen charging

Xinglong Ye (), Harish K. Singh, Hongbin Zhang, Holger Geßwein, Mohammed Reda Chellali, Ralf Witte, Alan Molinari, Konstantin Skokov, Oliver Gutfleisch, Horst Hahn and Robert Kruk ()
Additional contact information
Xinglong Ye: Karlsruhe Institute of Technology
Harish K. Singh: Technische Universität Darmstadt
Hongbin Zhang: Technische Universität Darmstadt
Holger Geßwein: Karlsruhe Institute of Technology
Mohammed Reda Chellali: Karlsruhe Institute of Technology
Ralf Witte: Karlsruhe Institute of Technology
Alan Molinari: Karlsruhe Institute of Technology
Konstantin Skokov: Technische Universität Darmstadt
Oliver Gutfleisch: Technische Universität Darmstadt
Horst Hahn: Karlsruhe Institute of Technology
Robert Kruk: Karlsruhe Institute of Technology

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Owing to electric-field screening, the modification of magnetic properties in ferromagnetic metals by applying small voltages is restricted to a few atomic layers at the surface of metals. Bulk metallic systems usually do not exhibit any magneto-electric effect. Here, we report that the magnetic properties of micron-scale ferromagnetic metals can be modulated substantially through electrochemically-controlled insertion and extraction of hydrogen atoms in metal structure. By applying voltages of only ~ 1 V, we show that the coercivity of micrometer-sized SmCo5, as a bulk model material, can be reversibly adjusted by ~ 1 T, two orders of magnitudes larger than previously reported. Moreover, voltage-assisted magnetization reversal is demonstrated at room temperature. Our study opens up a way to control the magnetic properties in ferromagnetic metals beyond the electric-field screening length, paving its way towards practical use in magneto-electric actuation and voltage-assisted magnetic storage.

Date: 2020
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-020-18552-z Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18552-z

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-020-18552-z

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().