Cluster Synthesis, Direct Ordering and Alignment of Rare-Earth Transition- Metal Nanomagnets

B. Balamurugan, R. Skomski, Damien Le Roy, G. C. Hadjipanayis, J. E. Shield, David J Sellmyer

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

Rare-earth transition-metal (R-TM) alloys show superior permanent magnetic properties in the bulk, but the synthesis and application of R-TM nanoparticles remains a challenge due to the requirement of high-temperature annealing above about 800°C for alloy formation and subsequent crystalline ordering. Here we report a single-step method to produce highly ordered R-TM nanoparticles such as YCo5 and SmCo5, without high-temperature thermal annealing by employing a cluster-deposition system, and we investigate their structural and magnetic properties. Nanoparticles of size d ≤ 10 nm are monodispersed (σ/d≈ 0.15) and have Hc values at T = 300 K of 8.0 and 4.5 kOe for YCo5 and SmCo5, respectively. Alignment of the easy axes is performed via a field applied to the clusters before deposition. These processing steps are highly desirable to create and assemble R-TM nanoparticle composites for future permanentmagnet applications.

Original languageEnglish (US)
Title of host publicationEnergy Technology 2012
Subtitle of host publicationCarbon Dioxide Management and Other Technologies
PublisherJohn Wiley and Sons
Pages382-390
Number of pages9
ISBN (Print)9781118291382
DOIs
StatePublished - May 15 2012

Fingerprint

Rare earths
Transition metals
Metal nanoparticles
Magnetic properties
Transition metal alloys
Annealing
Structural properties
Nanoparticles
Crystalline materials
Temperature
Composite materials
Processing
samarium cobalt

Keywords

  • Cluster-deposition
  • Direct ordering
  • Easy axis alignment
  • Magnetic nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Balamurugan, B., Skomski, R., Roy, D. L., Hadjipanayis, G. C., Shield, J. E., & Sellmyer, D. J. (2012). Cluster Synthesis, Direct Ordering and Alignment of Rare-Earth Transition- Metal Nanomagnets. In Energy Technology 2012: Carbon Dioxide Management and Other Technologies (pp. 382-390). John Wiley and Sons. https://doi.org/10.1002/9781118365038.ch44

Cluster Synthesis, Direct Ordering and Alignment of Rare-Earth Transition- Metal Nanomagnets. / Balamurugan, B.; Skomski, R.; Roy, Damien Le; Hadjipanayis, G. C.; Shield, J. E.; Sellmyer, David J.

Energy Technology 2012: Carbon Dioxide Management and Other Technologies. John Wiley and Sons, 2012. p. 382-390.

Research output: Chapter in Book/Report/Conference proceedingChapter

Balamurugan, B, Skomski, R, Roy, DL, Hadjipanayis, GC, Shield, JE & Sellmyer, DJ 2012, Cluster Synthesis, Direct Ordering and Alignment of Rare-Earth Transition- Metal Nanomagnets. in Energy Technology 2012: Carbon Dioxide Management and Other Technologies. John Wiley and Sons, pp. 382-390. https://doi.org/10.1002/9781118365038.ch44
Balamurugan B, Skomski R, Roy DL, Hadjipanayis GC, Shield JE, Sellmyer DJ. Cluster Synthesis, Direct Ordering and Alignment of Rare-Earth Transition- Metal Nanomagnets. In Energy Technology 2012: Carbon Dioxide Management and Other Technologies. John Wiley and Sons. 2012. p. 382-390 https://doi.org/10.1002/9781118365038.ch44
Balamurugan, B. ; Skomski, R. ; Roy, Damien Le ; Hadjipanayis, G. C. ; Shield, J. E. ; Sellmyer, David J. / Cluster Synthesis, Direct Ordering and Alignment of Rare-Earth Transition- Metal Nanomagnets. Energy Technology 2012: Carbon Dioxide Management and Other Technologies. John Wiley and Sons, 2012. pp. 382-390
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