Prospects for nanoparticle-based permanent magnets

Journal Article · Sat Sep 01 04:00:00 EDT 2012 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2012.03.034· OSTI ID:1211095

Balamurugan, B; Sellmyer, DJ; Hadjipanayis, GC; Skomski, R

Magnetic nanoparticles smaller than similar to 15 nm in diameter and with high magnetocrystalline anisotropies K-1 >= 1 MJ m(-3) can be used as building blocks for next-generation permanent magnets. Advances in processing steps are discussed, such as self-assembly, alignment of the easy axes and appropriate nanostructuring that will enable the fabrication of densely packed nanopartide assemblies with improved permanent-magnet properties. This study also proposes an idealized nanocomposite structure for nanoparticle-based future permanent magnets with enhanced energy products. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: AR0000046
• OSTI ID: 1211095
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 6 Vol. 67; ISSN 1359-6462
• Country of Publication: United States
• Language: English