期刊
CRYSTAL GROWTH & DESIGN
卷 10, 期 7, 页码 2888-2894出版社
AMER CHEMICAL SOC
DOI: 10.1021/cg900920q
关键词
-
资金
- National Natural Science Foundation of China [50504017]
- Hunan Provincial Key Science and Technology Project of China [2007FJ3008]
Monodisperse Fe3O4 nanocubes have been successfully synthesized by a facile solvothermal method at 260 degrees C in the presence of oleic acid and oleylamine. Well-defined assembly of uniform Fe3O4 nanocubes with an average size of 12 nm could be obtained without a size-selection process. The shape of as-prepared Fe3O4 nanoparticles could be reversibly interchanged between spheres and cubes by adjusting the reaction parameters. The phase structures, morphologies, and sizes of as-prepared products were investigated in detail by X-ray diffraction (X R D), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). The magnetic properties of Fe3O4 nanocubcs were measured by using a quantum design superconducting quantum interference device (SQUID). The magnetic study reveals that the assynthesized nanocubcs are ferromagnetic at 2 K while they are superparamagnetic at 300 K.
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