The effect of anion on the magnetic properties of nanocrystalline NiO synthesized by homogeneous precipitation

Pulimi, V. Ranga Rao; Jeevanandam, P.

doi:10.1016/j.jmmm.2009.03.039

Cited by 24 publications

(7 citation statements)

References 34 publications

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“…The observed weak ferromagnetic nature of NiO samples is highly consistent with previous reports. [50][51][52][53][54] NiO samples synthesized at higher microwave power showed higher magnetization of 0.23-0.3 emu g −1 than the sample synthesized at lowest power of 300 W, which gives the least value of 0.0052 emu g −1 .…”

Section: Resultsmentioning

confidence: 86%

Influence of microwave power on the preparation of NiO nanoflakes for enhanced magnetic and supercapacitor applications

et al. 2015

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Nanoflake-structured NiO were synthesized by a microwave assisted method without the use of additives. The cubic phase of NiO nanoparticles with increasing crystalline nature for higher microwave power is ascertained by X-ray diffraction studies. Previous reports revealed that hexagonally structured β-Ni(OH)2 was completely transferred into the cubic phase of NiO around 350 °C, confirmed by using thermal analysis (TG/DTA). In our present work, the size and morphology of nanoparticles are ascertained from transmission electron microscopy (TEM) analysis. Flake-like morphology with uniform size, shape and less agglomerated structure formation is obtained for 900 and 600 W of microwave power used for the synthesis of NiO samples. The effect of microwave power used for the synthesis of NiO nanoflakes was analyzed by studying the magnetic and electrochemical behavior of NiO nanoflakes. Room temperature magnetic measurements revealed the small ferromagnetic nature of NiO nanoparticles. It was observed that the samples synthesized at higher microwave power exhibited divergence behavior below 300 K in FC and ZFC measurements, which results superparamagnetic behavior. An enhanced supercapacitor performance with higher specific capacitance values was determined for NiO nanoflake samples synthesized at (25)600 W and 900 W of microwave power.

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Section: Resultsmentioning

confidence: 86%

Influence of microwave power on the preparation of NiO nanoflakes for enhanced magnetic and supercapacitor applications

et al. 2015

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“…Among the solution based methods, homogeneous precipitation has been widely used since one can easily control the particle size with the production of powders with uniform size [28][29][30]. In the homogenous precipitation method, the chemical composition and homogeneity of the produced mixed metal oxide nanoparticles depend on concentration of the reagents, pH, aging conditions and calcination temperature of the precursors [31,32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CuO@NiO core-shell nanoparticles by homogeneous precipitation method

Bayal

Jeevanandam

2012

Journal of Alloys and Compounds

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“…The lower M s is due to oxidation of the nickel nanoparticles. Considering the saturation magnetization of bulk nickel and bulk nickel oxide (NiO) (1.2 emu · g −1 74), the weight percent of Ni in the nanoparticles is calculated to be 24.4%. Considering the provided average nanoparticle size of 20 nm ( R 1 = 10 nm), the core and shell size of the nanoparticles can be deduced from Equation (1) based on the reported bulk density of Ni (8.9 g · cm −3 ) and NiO (6.67 g · cm −3 ): where C Ni and C NiO are the concentrations of Ni and NiO in wt.‐%, respectively.…”

Section: Resultsmentioning

confidence: 99%

Electrospun Magnetic Fibrillar Polystyrene Nanocomposites Reinforced with Nickel Nanoparticles

Chen

Wei

Güneşoğlu

et al. 2010

Macro Chemistry & Physics

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The morphology and thermal stability of bead‐free and uniform electrospun pure polystyrene (PS) and PS/Ni nanocomposite fibers are investigated by SEM and TGA/DSC. A higher thermal stability is observed after introducing the nanoparticles in the polymer fibers. FT‐IR analysis indicates a physical entanglement rather than chemical bonding between the nanoparticles and the polystyrene matrix. The nanoparticles still exhibit superparamagnetic properties even after dispersing in the polymer matrix, different from the reported enhanced coercivity as a result of the enlarged particle distance. However, the magnetic field required to saturate the magnetization is significantly reduced. A further oxidation is deduced after the high voltage electrospinning process.magnified image

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The effect of anion on the magnetic properties of nanocrystalline NiO synthesized by homogeneous precipitation

Cited by 24 publications

References 34 publications

Influence of microwave power on the preparation of NiO nanoflakes for enhanced magnetic and supercapacitor applications

Influence of microwave power on the preparation of NiO nanoflakes for enhanced magnetic and supercapacitor applications

Synthesis of CuO@NiO core-shell nanoparticles by homogeneous precipitation method

Electrospun Magnetic Fibrillar Polystyrene Nanocomposites Reinforced with Nickel Nanoparticles

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