TY - JOUR
T1 - Size-dependent changeover in magnetization reversal mode of self-assembled one-dimensional chains of spherical Fe3O4 nanoparticles
AU - Samardak, Alexander S.
AU - Davydenko, Alexander V.
AU - Ognev, Alexey V.
AU - Jeon, Yoo Sang
AU - Choi, Young Soo
AU - Kim, Young Keun
N1 - Funding Information:
Acknowledgments This work was supported by the National Research Foundation of Korea (2013K2A1A7076318, 2014M3A7B4052193, 2015M3D1A1070465), the Russian Foundation for Basic Research (14-02-91701 NIFa), and the Russian Ministry of Education and Science (State Task 559).
Publisher Copyright:
© 2016 The Japan Society of Applied Physics.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/10
Y1 - 2016/10
N2 - 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.
AB - 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.
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U2 - 10.7567/JJAP.55.100303
DO - 10.7567/JJAP.55.100303
M3 - Article
AN - SCOPUS:84989337889
VL - 55
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 10
M1 - 100303
ER -