期刊
JOURNAL OF APPLIED PHYSICS
卷 117, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4916544
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资金
- U.S. DoD/ARO [W911NF-11-1-0507]
- Center for Nanostructured Materials and Characterization Center for Materials and Biology at the University of Texas at Arlington
Single crystalline CoFe2O4 nanoparticles with high coercivity were prepared via a one-step hydrothermal method. The shape and size of the nanocrystals (in the range of 20-100 nm) can be controlled by varying synthesis parameters such as the concentration of NaOH and CTAB. X-ray diffraction and Raman spectra analysis confirmed that all the as-synthesized nanoparticles have a face centered cubic spinel crystal structure. HRTEM observation of particles shows interlayer spacing 0.48 nm of (111) lattice planes. A coercive force up to 5.0 kOe and saturation magnetization of 73 emu/g was achieved at room temperature for the 40 nm CoFe2O4 nanoparticles. (C) 2015 AIP Publishing LLC.
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