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Solvothermal Synthesis and Magnetic Property of Magnetic Chains Self‐assembled by Fe 3 O 4 Microoctahedrons
Author(s) -
Zhang Junhao,
Wan Jun,
Huang Shaoxing,
Du Jin,
Zhu Jia,
Zhang Dongjing,
Yin Qinghuan,
Wu Yuhui
Publication year - 2010
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201090272
Subject(s) - chemistry , coercivity , transmission electron microscopy , crystallography , solvent , scanning electron microscope , diffraction , magnetization , phase (matter) , microscale chemistry , nanotechnology , chemical engineering , magnetic field , condensed matter physics , materials science , organic chemistry , optics , composite material , physics , mathematics education , mathematics , engineering , quantum mechanics
The magnetic Fe 3 O 4 microscale chains self‐assembled of microoctahedrons have been synthesized via a facile one‐pot solution‐phase route at 200°C. The result of X‐ray diffraction (XRD) indicates that the product is face‐centered cubic Fe 3 O 4 and has highly crystalline nature. Field‐emission scanning electron microscopy (FESEM) and transmission electron microscope (TEM) images show that the product consists of larger numbers of Fe 3 O 4 microoctahedrons chains, and the size of microoctahedrons is from 1 to 3 μm. The effect of NaOH concentration and solvent on the morphologies of the products indicates that appropriate alkaline surrounding and solvent may be propitious to the formation of the uniform Fe 3 O 4 microoctahedrons chains. The magnetic measurements at room temperature indicate that the values of saturation magnetization (85.6 emu/g) and coercivity (65.2 Oe) are different from those of dispersed microoctahedrons due to the different size and the oriented self‐assembled structure of microoctahedrons.