The effect of core–shell engineering on the energy product of magnetic nanometals

Wei Zhang; Weibing Yang; Ravini U. Chandrasena; V. Burak Özdöl; Jim Ciston; Michael Kornecki; SelvaVennila Raju; Raymond Brennan; Alexander X. Gray; Shenqiang Ren

doi:10.1039/C8CC05978K

The effect of core–shell engineering on the energy product of magnetic nanometals†

Wei Zhang,^a Weibing Yang,^b Ravini U. Chandrasena,^b V. Burak Özdöl,^c Jim Ciston,^c Michael Kornecki,^d SelvaVennila Raju,^d Raymond Brennan,^d Alexander X. Gray^b and Shenqiang Ren

*^a

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^a Department of Mechanical and Aerospace Engineering, and Research and Education in Energy, Environment & Water (RENEW) Institute, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
E-mail: shenren@buffalo.edu

^b Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA

^c National Center for Electron Microscopy Facility, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

^d U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, USA

Abstract

Solution-based growth of magnetic FePt–FeCo (core–shell) nanoparticles with a controllable shell thickness has been demonstrated. The transition from spin canting to exchange coupling of FePt–FeCo core–shell nanostructures leads to a 28% increase in the coercivity (12.8 KOe) and a two-fold enhancement in the energy product (9.11 MGOe).

Chemical Communications

The effect of core–shell engineering on the energy product of magnetic nanometals†

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