Cluster synthesis and direct ordering of rare-earth transition-metal nanomagnets

Balamurugan Balasubramanian; Ralph Skomski; Xingzhong Li; Shah R. Valloppilly; Jeffrey E. Shield; George C. Hadjipanayis; David J. Sellmyer

doi:10.1021/nl200311w

Cluster synthesis and direct ordering of rare-earth transition-metal nanomagnets

Balamurugan Balasubramanian, Ralph Skomski, Xingzhong Li, Shah R. Valloppilly, Jeffrey E. Shield, George C. Hadjipanayis, David J. Sellmyer

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

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 Y₂Co₁₇, without high-temperature thermal annealing by employing a cluster-deposition system and investigate their structural and magnetic properties. The direct ordering is highly desirable to create and assemble R-TM nanoparticle building blocks for future permanent-magnet and other significant applications.

Original language	English (US)
Pages (from-to)	1747-1752
Number of pages	6
Journal	Nano Letters
Volume	11
Issue number	4
DOIs	https://doi.org/10.1021/nl200311w
State	Published - Apr 13 2011

Keywords

Nanoparticles
cluster-deposition
crystalline ordering
magnetic properties
rare-earth transition-metal alloys

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl200311w

Cite this

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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 Y2Co17, without high-temperature thermal annealing by employing a cluster-deposition system and investigate their structural and magnetic properties. The direct ordering is highly desirable to create and assemble R-TM nanoparticle building blocks for future permanent-magnet and other significant applications.",

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T1 - Cluster synthesis and direct ordering of rare-earth transition-metal nanomagnets

AU - Balasubramanian, Balamurugan

AU - Skomski, Ralph

AU - Li, Xingzhong

AU - Valloppilly, Shah R.

AU - Shield, Jeffrey E.

AU - Hadjipanayis, George C.

AU - Sellmyer, David J.

PY - 2011/4/13

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AB - 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 Y2Co17, without high-temperature thermal annealing by employing a cluster-deposition system and investigate their structural and magnetic properties. The direct ordering is highly desirable to create and assemble R-TM nanoparticle building blocks for future permanent-magnet and other significant applications.

KW - Nanoparticles

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KW - crystalline ordering

KW - magnetic properties

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Cluster synthesis and direct ordering of rare-earth transition-metal nanomagnets

Abstract

Keywords

ASJC Scopus subject areas

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