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Citation: WANG Run-Han, JIANG Ji-Sen, HU Ming. Controlled Syntheses of FeNi₃ Alloy Nanostructures via Reverse Microemulsion-Directed Hydrothermal Motheds[J]. Acta Physico-Chimica Sinica, ;2009, 25(10): 2167-2172. doi: 10.3866/PKU.WHXB20091014 shu

Controlled Syntheses of FeNi₃ Alloy Nanostructures via Reverse Microemulsion-Directed Hydrothermal Motheds

1.
Center of Functional Nanomaterials and Devices, Department of Physics, East China Normal University, Shanghai 200062, P. R. China

Received Date: 12 May 2009
Available Online: 26 August 2009

FeNi3 alloy nanostructures were synthesized by hydrothermal methods in the surfactant/n-octane/n-hexanol/water quaternary reverse microemulsion systems. The size and shape of the products could be controlled by changing the type and dosage of the surfactant. Spherical particles with a diameter of ca 75 nmwere prepared when polyethylene glycol 4000 (PEG4000) was used as the surfactant. Sea-urchin-like particle was obtained when cetyltrimethylammonium bromide (CTAB) was used as the surfactant. The single sea-urchin-like particles were composed of many nanorods with diameters of ca 42 nm and lengths of 0.4-1.2 μm. The as-synthesized products were characterized by powder X-ray diffraction (XRD), Mossbauer spectroscopy, scanning electronic microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and multi-purpose magnetic variable field translation balance (MM VFTB). Both the spherical and sea-urchin-like FeNi3 samples exhibited typical ferromagnetic behavior at roomtemperature. Their saturation magnetization values (Ms) were 114.4 and 97.4 emu·g-1, respectively, while their coercivity values (Hc) were 94.0 and 329.0 Oe, respectively.
- Nanoparticles,
- FeNi3 alloy,
- Reverse microemulsion,
- Hydrothermal method,
- Morphology control
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沈阳化工大学材料科学与工程学院沈阳 110142

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Controlled Syntheses of FeNi3 Alloy Nanostructures via Reverse Microemulsion-Directed Hydrothermal Motheds

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通讯作者: 陈斌, bchen63@163.com

Controlled Syntheses of FeNi₃ Alloy Nanostructures via Reverse Microemulsion-Directed Hydrothermal Motheds