Superstructures of self-assembled cobalt nanocrystals

Youhui Gao; Yuping Bao; Michael Beerman; Akira Yasuhara; Daisuke Shindo; Kannan M. Krishnan

doi:10.1063/1.1723687

Superstructures of self-assembled cobalt nanocrystals

Youhui Gao, Yuping Bao, Michael Beerman, Akira Yasuhara, Daisuke Shindo, Kannan M. Krishnan

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

60 Citations (Scopus)

Abstract

Self assembly behavior of the supermagnetic cobalt (Co) nanocrystals (NC) was investigated by applying magnetic fields. It was observed that interplay between dipolar interaction and applied magnetic fields produced the three-dimensional superstructure of the spherical Co NC. It was also observed that length to width ratio of grain-like superstructure enhanced greatly by increasing the particle size to about 10 nm. The results show that self assembly of NC is helpful in the preparation mesomagnets and magnetic quantum devices.

Original language	English
Pages (from-to)	3361-3363
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	17
DOIs	https://doi.org/10.1063/1.1723687
Publication status	Published - 2004 Apr 26

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1723687

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AU - Gao, Youhui

AU - Bao, Yuping

AU - Beerman, Michael

AU - Yasuhara, Akira

AU - Shindo, Daisuke

AU - Krishnan, Kannan M.

PY - 2004/4/26

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N2 - Self assembly behavior of the supermagnetic cobalt (Co) nanocrystals (NC) was investigated by applying magnetic fields. It was observed that interplay between dipolar interaction and applied magnetic fields produced the three-dimensional superstructure of the spherical Co NC. It was also observed that length to width ratio of grain-like superstructure enhanced greatly by increasing the particle size to about 10 nm. The results show that self assembly of NC is helpful in the preparation mesomagnets and magnetic quantum devices.

AB - Self assembly behavior of the supermagnetic cobalt (Co) nanocrystals (NC) was investigated by applying magnetic fields. It was observed that interplay between dipolar interaction and applied magnetic fields produced the three-dimensional superstructure of the spherical Co NC. It was also observed that length to width ratio of grain-like superstructure enhanced greatly by increasing the particle size to about 10 nm. The results show that self assembly of NC is helpful in the preparation mesomagnets and magnetic quantum devices.

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Superstructures of self-assembled cobalt nanocrystals

Abstract

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