期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 423, 期 -, 页码 321-326出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2016.09.132
关键词
Fe3O4; Solvothermal process; Shape-controlled; High magnetization
资金
- National Natural Science Foundation of China [11504293, 51572218]
- China Postdoctoral Science Fundation [2015M580870]
- Natural Science Foundation of Shannxi Province, China [2014JQ1040]
- Foundation of Educational department of Shaanxi Province, China [13JS100, 14JK1727]
In the present study, high-crystalline and well-defined Fe3O4 nanostructures with tunable morphologies were fabricated through a facile one-pot solvothermal approach. The morphology, crystal structure and chemical compositions of the products were characterized at the nanoscale. X-ray diffraction and selected area electron diffraction patterns indicate that the products have a pure spinel phase without the presence of any other impurity. Based on the transmission electron microscope technology, shape evolution of the products were investigated. Several morphologies including irregular particles, clusters, hollow sphere and octahedrons can be obtained by only adjusting the amount of NaOH without using any surfactant. Magnetism investigations show that all the products perform ferromagnetic behavior with high saturation magnetization at room temperature, which mainly originates from their high crystalline nature and template-free fabrication process.
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