PIXE &amp; XRD analysis of nanocrystals of Fe, Ni and Fe2O3

Chanda, Saptaparni; Manna, Amit Kumar; Vijayan, V.; Nayak, P.K.; Acharya, H. N.

doi:10.1016/j.matlet.2007.03.112

Cited by 25 publications

(8 citation statements)

References 6 publications

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“…Due to the large surface to volume ratio and strong magnetic attraction forces, the Ni nanoparticles tend to agglomerate in order to minimize the total surface energy of the system. The produced nanoparticles are spherical with the size between 80 nm to 400 nm depending on the molar ratio of Ni(CH 3 COO) 2 /N 2 H 4 between 0.4 to 0.07. samples by Scherrer formula [28] at 2θ of 44.5º are general approximates to those of SEM observation (Fig. 3, 6).…”

Section: Resultssupporting

confidence: 80%

The synthesis of nickel nanoparticles with controlled morphology and SiO2/Ni core-shell structures

Libor

Zhang

2009

Materials Chemistry and Physics

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The magnetic nanopowders can be potentially applied in wide range of fields such as magnetic storage, magnetic fluid, medical diagnosis, conducting paints, rechargeable batteries, optoelectronics, magnetic recording media, drug delivery system and catalysis. They have attracted interest in the past decade and have also been studied extensively because of their size-and shape-dependent physical-chemical and magnetic properties for applications in various useful technologies. In this work, we present our experimental results on the preparation of nanosized Ni nanoparticles with different shapes by using a wet chemical solution route. Ni nanoparticles were prepared by reducing a Ni-complex formed between nickel-acetate and hydrazine solution under basic condition. Then through the control of reaction temperature and ageing time, nanosized Ni particles with different morphologies could be formed. The morphology and sizes of synthesised nanostructures were studied by scanning electron microscopy (SEM). Structural properties of nanoparticles were examined by X-ray diffraction. We also report the coreshell structures of micro-composites of silica-nickel (SiO 2 /Ni). The composite core-shell structures were formed by the control of the surface charges of particles in aqueous solutions. A specific composite (SiO 2 /Ni) can be produced by controlling the surface charge, the pH and the molar ratio of the components. Core-shell structures are stable at room temperature.

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Section: Resultssupporting

confidence: 80%

The synthesis of nickel nanoparticles with controlled morphology and SiO2/Ni core-shell structures

Libor

Zhang

2009

Materials Chemistry and Physics

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“…In Fig. 5(2c), that is, the X-ray diffractogram curve of Ni/NanoG, the typical planes of both graphite (0 0 2), (1 1 1) and nickel (1 1 1), (2 0 0), (2 2 0) can be seen, which agree well with earlier reports [21][22][23][24]. The diffraction peaks of Ni/NanoG are relatively weaker than those of NanoG and Ni, respectively.…”

Section: Xrd Analysissupporting

confidence: 89%

Preparation and microwave absorbing properties of nickel-coated graphite nanosheet with pyrrole via in situ polymerization

Yang¹,

Qi²,

Wang

2012

Journal of Alloys and Compounds

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“…the TEM image of FO nanoparticles. It shows that the particles are predominantly spherical and the size of the particles varies from 10 to 15 nm, which is in good agreement with the value estimated by X-ray diffraction measurements (Scherrer formula at 2θ of 35.5º)[25] (Fig. 2).…”

supporting

confidence: 90%

Rheological properties of magnetic and electro-active nanoparticles in non-polar liquids

2011

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The rheological properties of two non-polar liquids [silicone oil or perfluorinated oil (FC70)] containing various types of particles, barium titanate, nickel and iron-oxide, were investigated as functions of solid loading, particle size and shear rate. All the particles were synthesised in-house. The viscosities of either silicone oil or FC70 containing different solid loadings (10, 20 and 30 g/l) were measured over the shear-rate range of 0.10-10 s −1. All the nanofluids showed shear thinning behaviour within this range and the viscosities increased with the increase of concentrations of nanoparticles and with the decrease of particle size. The highest increase of viscosity was found to be caused by nickel particles in silicone oil due to the formation of Ni network.

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PIXE & XRD analysis of nanocrystals of Fe, Ni and Fe2O3

Cited by 25 publications

References 6 publications

The synthesis of nickel nanoparticles with controlled morphology and SiO2/Ni core-shell structures

The synthesis of nickel nanoparticles with controlled morphology and SiO2/Ni core-shell structures

Preparation and microwave absorbing properties of nickel-coated graphite nanosheet with pyrrole via in situ polymerization

Rheological properties of magnetic and electro-active nanoparticles in non-polar liquids

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