Exchange-coupled nanoscale SmCo/NdFeB hybrid magnets

TitleExchange-coupled nanoscale SmCo/NdFeB hybrid magnets
Publication TypeJournal Article
Year of Publication2012
AuthorsWang DP, Poudyal N, Rong CB, Zhang Y, Kramer MJ, Liu JP
Journal TitleJournal of Magnetism and Magnetic Materials
Volume324
Pages2836-2839
Date Published09
Type of ArticleArticle
ISBN Number0304-8853
Accession NumberWOS:000304762400025
KeywordsBall milling, Exchange-coupled nanocomposite magnets, Hybrid magnets, Nanocrystalline materials, rare-earth, TRANSITION-METAL ALLOYS
Abstract

Nanoscale hybrid magnets containing SmCo5 and Nd2Fe14B hard magnetic phases have been produced via a novel "in-one-pot" processing route. The grain size of the processed bulk composite materials is controlled below 20 nm. The refinement of the nanoscale morphology leads to effective inter-phase exchange coupling that results in single-phase like magnetic properties. Energy product of 14 MGOe was obtained in the isotropic nanocomposite magnets at room temperature. At elevated temperatures, the hybrid magnets have greatly improved thermal stability compared to the Nd2Fe14B single-phase counterpart and have substantially increased magnetization and energy products compared to the single-phase SmCo5 counterpart. (C) 2012 Elsevier B.V. All rights reserved.

URL<Go to ISI>://WOS:000304762400025
DOI10.1016/j.jmmm.2012.04.018
Alternate JournalJ. Magn. Magn. Mater.