Size-dependent changeover in magnetization reversal mode of self-assembled one-dimensional chains of spherical Fe3O4 nanoparticles

Alexander S. Samardak, Alexander V. Davydenko, Alexey V. Ognev, Yoo Sang Jeon, Young Soo Choi, Young-geun Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Understanding the ferromagnetic behavior of coupled magnetic nanoparticles (NPs) in a chain structure, called a nanochain (NC), will open up new routes for its practical use. Here, we report the magnetization reversal modes in isolated magnetite (Fe3O4) NPs with diameters of 100 and 200 nm, as well as those of one-dimensional (1D) self-assembled NCs consisting of these NPs. NCs consisting of 100-nm diameter NPs switched through a transverse domain wall-like motion. Meanwhile, in 200-nm diameter NPs and NCs, we observed 3D magnetic vortex states that were more energetically favorable than single domain or multidomain states.

Original languageEnglish
Article number100303
JournalJapanese Journal of Applied Physics
Volume55
Issue number10
DOIs
Publication statusPublished - 2016 Oct 1

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Magnetization reversal
Nanoparticles
nanoparticles
magnetization
Magnetite nanoparticles
Domain walls
Vortex flow
magnetite
domain wall
routes
vortices

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Size-dependent changeover in magnetization reversal mode of self-assembled one-dimensional chains of spherical Fe3O4 nanoparticles. / Samardak, Alexander S.; Davydenko, Alexander V.; Ognev, Alexey V.; Jeon, Yoo Sang; Choi, Young Soo; Kim, Young-geun.

In: Japanese Journal of Applied Physics, Vol. 55, No. 10, 100303, 01.10.2016.

Research output: Contribution to journalArticle

Samardak, Alexander S. ; Davydenko, Alexander V. ; Ognev, Alexey V. ; Jeon, Yoo Sang ; Choi, Young Soo ; Kim, Young-geun. / Size-dependent changeover in magnetization reversal mode of self-assembled one-dimensional chains of spherical Fe3O4 nanoparticles. In: Japanese Journal of Applied Physics. 2016 ; Vol. 55, No. 10.
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