Effects of Gd ions doping on the microstructural, magnetic and optical properties in ZnO nanocrystals

Roy, Shradha; Ghosh, Mritunjoy Prasad; Mohanty, Sipun; Mukherjee, Sayak

doi:10.1007/s12034-022-02766-6

Cited by 6 publications

(5 citation statements)

References 32 publications

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“…Halder -Wagner (H-W) method resolved this issue by considering peak broadening as a symmetric voigt function. Symmetric voigt function is a superposition of Gaussian function and Lorentzian function [32,35]. In this method crystallite size and lattice strain were considered.…”

Section: Halder-wagner Methodsmentioning

confidence: 99%

“…The lattice parameters of pure and Co-doped samples can be calculated using the relation given as follows [32].…”

Section: Structural Characterizationmentioning

confidence: 99%

“…PL has been widely studied in semiconductor materials, which have unique electronic and optical properties that allow for a wide range of optoelectronic applications. At the nano- scale, the presence of defects and vacancy imperfections in the lattice planes can create a variety of electronic states between the valence band and conduction band, greatly impacting the material's optical properties [32].…”

Section: Photoluminescence Spectroscopymentioning

confidence: 99%

“…The de-convoluted peak was fitted with the help of Gaussian shape. It is well known that the peak in the ultraviolet region is the result of near-band-edge emission, a consequence of the radiative recombination of free excitons and the other peak (violet, Green) in the visible range, is a product of deep level defects (DLD) [32,39]. In the PL plots of our samples (pristine ZnO and Co doped ZnO), the sharp and intense emission peak observed near 361 nm (3.4 eV) is attributed to near band edge emission (NBE) or excitonic emission, which is a caused due to transition of excited electron from conduction band edge (CB) to the valence band edge (VB).…”

Section: Photoluminescence Spectroscopymentioning

confidence: 99%

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Investigation on the impact of cobalt doping on optical, structural and magnetic properties of zinc oxide nanoparticles

Roy,

Mukherjee

2023

Phys. Scr.

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In the current article, we investigated the impact of transition metal Co2+ doping in ZnO nanoparticles and its effect on their optical, structural, and magnetic properties. The synthesized nanoparticles have the generic formula Zn1-xCoxO (x = 0.00, 0.03, 0.06, and 0.09). Single-phase hexagonal crystal structure of the synthesized nanopowder was confirmed by X-ray diffractograms. Tauc plots were used to calculate the band gap of all the samples. Multiple emission peaks were observed from the photoluminescence studies. HRTEM was employed to study the particle morphology and the size distribution. X-ray photoelectron (XPS) spectroscopy was performed to investigate the chemical composition of samples. Magnetic measurements were carried out to study the magnetic behaviour of pure and doped ZnO samples. Ferromagnetic behaviour became more prominent with the addition of Co doping, as observed by room temperature M-H plots.

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Section: Halder-wagner Methodsmentioning

confidence: 99%

“…The lattice parameters of pure and Co-doped samples can be calculated using the relation given as follows [32].…”

Section: Structural Characterizationmentioning

confidence: 99%

Section: Photoluminescence Spectroscopymentioning

confidence: 99%

Section: Photoluminescence Spectroscopymentioning

confidence: 99%

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Investigation on the impact of cobalt doping on optical, structural and magnetic properties of zinc oxide nanoparticles

Roy,

Mukherjee

2023

Phys. Scr.

Self Cite

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“…[31]. Roy et al studied structural, magnetic, and optical responses of Gd-doped ZnO nanoparticles synthesized by the co-precipitation technique and demonstrated that the synthesized samples show a lower band gap as compared to undoped ZnO [32].…”

Section: Introductionmentioning

confidence: 99%

Study of Structural, Optical, Electrical and Dielectric Properties of Gd-Doped ZnO Composites Synthesized by Solid State Reaction Method

Kundara,

Chawla,

Yadav

et al. 2024

OJCM

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In this manuscript, we are reporting structural, bonding, optical, dielectric, and electrical properties of Gd-doped ZnO composite samples (Zn 1−x Gd x O, x = 0, 0.05, 0.10) prepared by solid-state reaction method. XRD spectra confirm the wurtzite hexagonal phase with a grain size distribution of 42 -47 nm. The FT-IR spectra confirm bonding behavior like Zn-O, O=C=O, and O-H stretching modes. FESEM micrographs show that the grains of crystallites possess nearly spherical morphology. Optical absorption spectra confirm that the optical band gap decreases systematically from 3.19 eV to 3.15 eV for x = 0.0 to x = 0.10 samples. For all samples, PL spectra exhibited near-band emission, blue emission, and green emission peaks. The dielectric constant decreases as the applied frequency increases. Hall effect results show that with increasing doping concentration of Gd, mobility and resistivity increase while bulk concentration decreases. Current-Voltage study shows that current increases when temperature is increased. Rare earth-doped ZnO is potential material used for optoelectronics and spintronics device applications. Properties of Gd-doped ZnO are studied by various research groups, but dielectric studies are limitedly reported. Therefore, the present research work aims to study the change of electrical, optical, and dielectric properties of Gd-doped ZnO for device applications.

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Effect of Mg and rare earth ions co-doping on the structural and optical properties of ZnO nanorods

Panigrahi,

Das,

Satpathy

et al. 2024

J Mater Sci: Mater Electron

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Effects of Gd ions doping on the microstructural, magnetic and optical properties in ZnO nanocrystals

Cited by 6 publications

References 32 publications

Investigation on the impact of cobalt doping on optical, structural and magnetic properties of zinc oxide nanoparticles

Investigation on the impact of cobalt doping on optical, structural and magnetic properties of zinc oxide nanoparticles

Study of Structural, Optical, Electrical and Dielectric Properties of Gd-Doped ZnO Composites Synthesized by Solid State Reaction Method

Effect of Mg and rare earth ions co-doping on the structural and optical properties of ZnO nanorods

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