Intercalation-driven reversible control of magnetism in bulk ferromagnets.

Authors :: Dasgupta S
Das B
Knapp M
Brand RA
Ehrenberg H
Kruk R
Hahn H
Source :: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2014 Jul 16; Vol. 26 (27), pp. 4639-44. Date of Electronic Publication: 2014 Mar 03.
Publication Year :: 2014
Abstract: An extension in magnetoelectric effects is proposed to include reversible chemistry-controlled magnetization variations. This ion-intercalation-driven magnetic control can be fully reversible and pertinent to bulk material volumes. The concept is demonstrated for ferromagnetic iron oxide where the intercalated lithium ions cause valence change and partial redistribution of Fe(3+) cations yielding a large and fully reversible change in magnetization at room temperature.<br /> (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)