Synthesis, Structural and Magnetic Characterization of Ni-Doped ZnO Diluted Magnetic Semiconductor

Elilarassi, R.; Chandrasekaran, G.

doi:10.5923/j.materials.20120201.09

Cited by 37 publications

(9 citation statements)

References 15 publications

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“…Also, magnetization curves of CoNPs were very low around 0.2–0.3 emu/g, with a soft hysteresis loop 59 . In addition to the magnetization curve of ZnNPs with saturation magnetization had a value of around 5 emu/g 60 . From these results, we concluded that Fe, Cu, and Zn were paramagnetic NPs, and Co was ferro-magnetic NPs.…”

Section: Discussionmentioning

confidence: 99%

Nano-metals forming bacteria in Egypt. I. Synthesis, characterization and effect on some phytopathogenic bacteria in vitro

Zaki

Kamal

Ashmawy

et al. 2021

Sci Rep

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Bacterial metal reducers were isolated from water samples collected from harsh condition locations in Egypt. Four selected isolates were identified as Enterococcus thailandicus, Pseudomonas putida, Marinobacter hydrocarbonoclasticus, and P. geniculata for Copper (Cu), Iron (Fe), Cobalt (Co) and Zinc (Zn) Nanoparticles (NPs) production sequentially. Nitrate reductase enzyme was assayed for bacterial isolates which demonstrated that P. putida, and M. hydrocarbonoclasticus have the maximum enzyme production. The produced NPs were characterized by using XRD, TEM, UV–VIS spectroscopy. Magnetic properties for all selected metals NPs were measured using Vibrating Sample Magnetometer (VSM) and demonstrated that FeNPs recorded the highest magnetization value. The antibacterial activity of selected metals NPs was tested against some phytopathogenic bacteria causing the following diseases: soft rot (Pectobacterium carotovorum, Enterobacter cloacae), blackleg (Pectobacterium atrosepticum and Dickeya solani), brown rot (Ralstonia solanacearum), fire blight (Erwinia amylovora) and crown gall (Agrobacterium tumefaciens). All metals NPs showed an antagonistic effect against the tested isolates, particularly, FeNPs showed the highest antibacterial activity followed by CuNPs, and ZnNPs. Due to the small size, high reactivity, and large surface area of biologically synthesized NPs, they are used as a good disinfector, and can be considered as a new and alternative approach to traditional disease management methods.

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Section: Discussionmentioning

confidence: 99%

Nano-metals forming bacteria in Egypt. I. Synthesis, characterization and effect on some phytopathogenic bacteria in vitro

Zaki

Kamal

Ashmawy

et al. 2021

Sci Rep

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“…It is widely used for determining the type of doping elements as EPR spectra of different transition elements in different oxidation states are different. EPR spectra of Mn ZnO have six lines, and of Ni-doped ZnO has only 1 as shown in Figure b and c. , …”

Section: Structure Of Transition Metal (Tm)-doped Znomentioning

confidence: 97%

“…83 It is widely used for determining the type of doping elements 84 as EPR spectra of different transition elements in different oxidation states are different. EPR spectra of Mn ZnO have six lines, and of Ni-doped ZnO has only 1 as shown in Figure 6b and c. 85,86 Norberg 87 and his group monitored the synthesis process using EPR spectroscopy. The EPR spectra were measured at different reaction intervals.…”

Section: Epr (Electron Paramagnetic Resonance)mentioning

confidence: 99%

Progress on Transition Metal-Doped ZnO Nanoparticles and Its Application

Singh

Kumar

Singh

2019

Ind. Eng. Chem. Res.

185

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ZnO nanoparticles are still a hot area for research even after ample work has been done by researchers across the world. It is a versatile material for doping of different transition metals among other metal oxides. Having a large family of morphological structures, high electron mobility, and n-type carrier defects, it is suitable for a number of applications such as memory devices, spintronics, optoelectronic devices, solar cells, and sensors. Here, we have emphasized a review of the effects of transition metal (TM) doping on the different physical properties of ZnO nanoparticles and their applications. We have gone through some theoretical models which were used by most of the researchers for explaining the variations in physical properties. Explanation of the sensing, photocatalytic, and optoelectronic processes in different classes of devices is briefly described. Lastly, the comparative studies of different devices are also made available for clear understanding.

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“…The analysis of the patterns showed a small shift to the left in the peaks of ZnO:Ni with respect to the diffraction peaks of the ZnO film. The effect is probably caused by a compression-type micro-stress attributed to the Ni atoms, that substitute Zn atoms inside the ZnO structure [22] or to the fact that the ionic radius of Ni (0.68 Å) is slightly bigger than the ionic radius of Zn (0.60 Å) [23].…”

Section: Resultsmentioning

confidence: 99%

Photoluminescent Enhancement by Effect of Incorporation Nickel in ZnO Films Grown

Gutiérrez

Díaz-Becerril

Garcı́a-Salgado

et al. 2021

EJENG

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Microstructured films of undoped zinc oxide (ZnO) and ZnO doped with nickel (ZnO:Ni) were grown by hot filament chemical vapor deposition (HFCVD) technique on Si (100) substrates at 500 °C. Pellets of ZnO and ZnO:NiO as oxidant agenst were used. A shift to the right around 0.17 degree of the X-Ray Diffraction pattern of the ZnO:Ni film was observed with respect to undoped ZnO films. Morphologically by Scanning Electron Microscopy was noticed a Core-Shell type growth in ZnO undoped and a nanostructured type (Nano-wire) in ZnO doped with Ni. Photoluminescence measurements showed an increase in the intensity of the green emission band of ZnO:Ni. It was attributed to defects of oxygen vacancies (VO), zinc vacancies (VZn), zinc interstitials (Zni), oxygen interstitials (Oi), and oxygen vacancies complex (VO complex) in the structure of the film. The incorporation of Ni atoms in the ZnO structure stresses the crystal lattice, leaving behind a large number of surface defects that increase the emission of PL.

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Synthesis, Structural and Magnetic Characterization of Ni-Doped ZnO Diluted Magnetic Semiconductor

Cited by 37 publications

References 15 publications

Nano-metals forming bacteria in Egypt. I. Synthesis, characterization and effect on some phytopathogenic bacteria in vitro

Nano-metals forming bacteria in Egypt. I. Synthesis, characterization and effect on some phytopathogenic bacteria in vitro

Progress on Transition Metal-Doped ZnO Nanoparticles and Its Application

Photoluminescent Enhancement by Effect of Incorporation Nickel in ZnO Films Grown

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