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A Nonaqueous Approach to the Preparation of Iron Phosphide Nanowires

She, Houde and Chen, Yuanzhi and Wen, Ruitao and Zhang, Kui and Peng, Dong-Liang and Yue, Guang-Hui (2010) A Nonaqueous Approach to the Preparation of Iron Phosphide Nanowires. Nanoscale Research Letters, 5 (4). pp. 786-790. ISSN 1931-7573 (Print) 1556-276X (Online)

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Previous preparation of iron phosphide nanowires usually employed toxic and unstable iron carbonyl compounds as precursor. In this study, we demonstrate that iron phosphide nanowires can be synthesized via a facile nonaqueous chemical route that utilizes a commonly available iron precursor, iron (III) acetylacetonate. In the synthesis, trioctylphosphine (TOP) and trioctylphosphine oxide (TOPO) have been used as surfactants, and oleylamine has been used as solvent. The crystalline structure and morphology of the as-synthesized products were characterized by powder X-ray diffraction (XRD) and transmission electron microscopy (TEM). The obtained iron phosphide nanowires have a typical width of ~16 nm and a length of several hundred nanometers. Structural and compositional characterization reveals a hexagonal Fe2P crystalline phase. The morphology of as-synthesized products is greatly influenced by the ratio of TOP/TOPO. The presence of TOPO has been found to be essential for the growth of high-quality iron phosphide nanowires. Magnetic measurements reveal ferromagnetic characteristics, and hysteresis behaviors below the blocking temperature have been observed.

Item Type:Article
Uncontrolled Keywords:Iron phosphides - Nanowire - Synthesis - Magnetic properties
Subjects:Analytical Science > Microscopy and probe methods
Technology > Manufacturing processes for nanotechnology
Physical Science > Nanoelectronics
Physical Science > Nanomagnetics
NanoSafety > Environment, health and safety aspects of nanotechnology
ID Code:8821
Deposited By:IoN
Deposited On:15 Jul 2010 10:22
Last Modified:15 Jul 2010 10:22

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