Self-assembled magnetic nanospheres with three-dimensional magnetic vortex

Min Kwan Kim; Prasanta Dhak; Ha Youn Lee; Jae Hyeok Lee; Myoung Woo Yoo; Jehyun Lee; Kyoungsuk Jin; Arim Chu; Ki Tae Nam; Hyun Soon Park; Shinji Aizawa; Toshiaki Tanigaki; Daisuke Shindo; Miyoung Kim; Sang Koog Kim

doi:10.1063/1.4903741

Self-assembled magnetic nanospheres with three-dimensional magnetic vortex

Min Kwan Kim, Prasanta Dhak, Ha Youn Lee, Jae Hyeok Lee, Myoung Woo Yoo, Jehyun Lee, Kyoungsuk Jin, Arim Chu, Ki Tae Nam, Hyun Soon Park, Shinji Aizawa, Toshiaki Tanigaki, Daisuke Shindo, Miyoung Kim, Sang Koog Kim

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

20 Citations (Scopus)

Abstract

We report the electron holography images of spin configurations in peculiar assemblies of soft magnetic nanoparticles in single-, double-, triple-, or quadruple-sphere geometrical arrangements in which each particle has a three-dimensional (3D) magnetic-vortex structure. Micromagnetic numerical calculations reveal that the uniqueness of the nanoparticles' 3D vortex structure plays a crucial role in their assembly, especially in terms of the contrasting contributions of the exchange and dipolar interactions to their binding energies. The results represent physical insights into the assembly of 3D-vortex-structure magnetic nanoparticles in different geometrical configurations and offer a practical means of controlling those assemblies.

Original language	English
Article number	232402
Journal	Applied Physics Letters
Volume	105
Issue number	23
DOIs	https://doi.org/10.1063/1.4903741
Publication status	Published - 2014 Dec 8
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014 AIP Publishing LLC.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4903741

Cite this

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title = "Self-assembled magnetic nanospheres with three-dimensional magnetic vortex",

abstract = "We report the electron holography images of spin configurations in peculiar assemblies of soft magnetic nanoparticles in single-, double-, triple-, or quadruple-sphere geometrical arrangements in which each particle has a three-dimensional (3D) magnetic-vortex structure. Micromagnetic numerical calculations reveal that the uniqueness of the nanoparticles' 3D vortex structure plays a crucial role in their assembly, especially in terms of the contrasting contributions of the exchange and dipolar interactions to their binding energies. The results represent physical insights into the assembly of 3D-vortex-structure magnetic nanoparticles in different geometrical configurations and offer a practical means of controlling those assemblies.",

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doi = "10.1063/1.4903741",

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AU - Kim, Min Kwan

AU - Dhak, Prasanta

AU - Lee, Ha Youn

AU - Lee, Jae Hyeok

AU - Yoo, Myoung Woo

AU - Lee, Jehyun

AU - Jin, Kyoungsuk

AU - Chu, Arim

AU - Nam, Ki Tae

AU - Park, Hyun Soon

AU - Aizawa, Shinji

AU - Tanigaki, Toshiaki

AU - Shindo, Daisuke

AU - Kim, Miyoung

AU - Kim, Sang Koog

PY - 2014/12/8

Y1 - 2014/12/8

N2 - We report the electron holography images of spin configurations in peculiar assemblies of soft magnetic nanoparticles in single-, double-, triple-, or quadruple-sphere geometrical arrangements in which each particle has a three-dimensional (3D) magnetic-vortex structure. Micromagnetic numerical calculations reveal that the uniqueness of the nanoparticles' 3D vortex structure plays a crucial role in their assembly, especially in terms of the contrasting contributions of the exchange and dipolar interactions to their binding energies. The results represent physical insights into the assembly of 3D-vortex-structure magnetic nanoparticles in different geometrical configurations and offer a practical means of controlling those assemblies.

AB - We report the electron holography images of spin configurations in peculiar assemblies of soft magnetic nanoparticles in single-, double-, triple-, or quadruple-sphere geometrical arrangements in which each particle has a three-dimensional (3D) magnetic-vortex structure. Micromagnetic numerical calculations reveal that the uniqueness of the nanoparticles' 3D vortex structure plays a crucial role in their assembly, especially in terms of the contrasting contributions of the exchange and dipolar interactions to their binding energies. The results represent physical insights into the assembly of 3D-vortex-structure magnetic nanoparticles in different geometrical configurations and offer a practical means of controlling those assemblies.

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Self-assembled magnetic nanospheres with three-dimensional magnetic vortex

Abstract

Bibliographical note

ASJC Scopus subject areas

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