Magnetism of directly ordered Sm-Co clusters

B. Balamurugan, R. Skomski, X. Z. Li, G. C. Hadjipanayis, D. J. Sellmyer

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Sm-Co bulk alloys have shown superior permanent-magnet properties, but research on Sm-Co nanoparticles is challenging because of the need to control particle size, size-distribution, crystalline ordering, and phase purity. In the present study, a cluster-deposition method was used to produce Sm-Co nanoparticles having desired crystal structures without the requirement of subsequent high-temperature thermal annealing. Poorly crystallized SmCo 5 nanoparticles exhibit a low room-temperature coercivity of only 100 Oe, whereas crystalline SmCo 5 and Sm 2Co 17 nanoparticles show room-temperature coercivities of 2000 and 750 Oe, respectively. The direct synthesis of Sm-Co nanoparticles having sizes of less than 10 nm and a high degree of atomic ordering is an important step toward creating nanoparticle building blocks for permanent-magnets and other significant applications.

Original languageEnglish (US)
Article number07B527
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
StatePublished - Apr 1 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Balamurugan, B., Skomski, R., Li, X. Z., Hadjipanayis, G. C., & Sellmyer, D. J. (2012). Magnetism of directly ordered Sm-Co clusters. Journal of Applied Physics, 111(7), [07B527]. https://doi.org/10.1063/1.3677668