Exchange-coupled hard magnetic Fe-Co/CoPt nanocomposite films fabricated by electro-infiltration

TitleExchange-coupled hard magnetic Fe-Co/CoPt nanocomposite films fabricated by electro-infiltration
Publication TypeJournal Article
Year of Publication2017
AuthorsWen, X., J. S. Andrew, and D. P. Arnold
JournalAIP Advances
Volume7
Issue5
Pagination056225
Date PublishedJan-05-2017
Abstract

This paper introduces a potentially scalable electro-infiltration process to produce exchange-coupled hard magnetic nanocomposite thin films. Fe-Co/CoPt nanocompositefilms are fabricated by deposition of CoFe2O4 nanoparticles onto Si substrate, followed by electroplating of CoPt. Samples are subsequently annealed under H2 to reduce the CoFe2O4to magnetically soft Fe-Co and also induce L10 ordering in the CoPt. Resultant films exhibit 0.97 T saturation magnetization, 0.70 T remanent magnetization, 127 kA/m coercivity and 21.8 kJ/m3 maximum energy density. First order reversal curve (FORC) analysis and δM plot are used to prove the exchange coupling between soft and hard magnetic phases.

URLhttp://aip.scitation.org/doi/10.1063/1.4976951
DOI10.1063/1.4976951
Short TitleAIP Advances