Growth and micromagnetic simulation of magnetite nanoparticles

Magnetite nanoparticles with different sizes and different assemblies were synthesized via hydrothermal method. Micromag- netic simulation shows the magnetite nanocubes with different sizes have different energy states, which determines the assem- bly mode. Magnetite nanocubes with the side length o...

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Bibliographic Details
Published in:Science China. Physics, mechanics & astronomy mechanics & astronomy, 2011-07, Vol.54 (7), p.1208-1212
Main Authors: Zhao, SuFen, Sun, Qian, Wang, RongMing, Han, YuNan
Format: Article
Language:English
Subjects:
Assemblies
Assembly
Astronomy
Classical and Continuum Physics
Dispersion
Magnetite
Nanocomposites
Nanomaterials
Nanoparticles
Nanostructure
Observations and Techniques
Physics
Physics and Astronomy
Research Paper
Simulation
仿真结果
水热法合成
生长
磁模拟
磁铁矿
纳米环
纳米粒子
装配模式
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Summary:Magnetite nanoparticles with different sizes and different assemblies were synthesized via hydrothermal method. Micromag- netic simulation shows the magnetite nanocubes with different sizes have different energy states, which determines the assem- bly mode. Magnetite nanocubes with the side length of 30--60 nm tended to be dispersed while both nanochains and dispersed nanoparticles were found to grow for the nanocubes with the side length less than 30 nm, which can be explained in the fact that the above two assembly modes have very close energies. The assembly mode of nanocubes with the size bigger than 60 nm is generally nanorings consisting of connected inter-grown nanocubes and the nanocubes are no longer single domain. The simulations are consistent with the experimental results.
ISSN:1674-7348
1869-1927
DOI:10.1007/s11433-011-4301-5