Correlation between structural, optical and magnetic properties of Mn-doped ZnO

Kumar, Pawan; Singh, Bipin; Pal, Bhola N.; Pandey, Praveen C.

doi:10.1007/s00339-016-0265-7

Cited by 40 publications

(14 citation statements)

References 50 publications

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“…The slope of the β cos θ vs. 4 sin θ Y −1 plots shown in figure 4 gives the σ value for each sample and the square of the slope of the β cos θ vs. 2 5/2 sin θ Y −1/2 plots shown in figure 5 equals to the u values. We have also calculated the atomic packing factor (APF) from the following equation [37]. The calculated APF for pristine and doped ZnO is ∼75%, implying that the introduction of Sm did not lead to a significant change in packing fraction, in agreement with earlier studies [37,38]:…”

Section: Xrpd Analysissupporting

confidence: 85%

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Structural and optical characterization of Sm-doped ZnO nanoparticles

2019

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Micro-structural changes in zinc oxide (ZnO) nanoparticles induced by the substitution of Zn 2+ in ZnO by a rare earth (RE) metal ion, Sm 3+ , are investigated. Both pristine and Sm-doped ZnO with a nominal doping concentration of 1, 2 and 4% of Sm using a simple wet-chemical synthetic route followed by calcination at a high temperature of 900 • C, are synthesized. Structural investigations are primarily conducted using X-ray powder diffraction (XRPD) and scanning electron microscopy techniques. Evolution of structural parameters (unit cell parameters, average crystallite size, crystallinity percentage, lattice strain, stress, energy density and atomic packing factor) upon Sm doping is investigated together with Rietveld refinement and Le Bail analysis techniques. XRPD data confirmed that the synthesized nanostructures crystallize in a wurtzite hexagonal structure, the dopant Sm is incorporated into the Zn lattice and the annealing treatment plays a crucial role in determining the structural and optical properties of RE-metal-doped nanoparticles. Values of the optical band gap energy estimated from optical absorbance measurements reveal a widening of the band gap.

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Section: Xrpd Analysissupporting

confidence: 85%

“…We have also calculated the atomic packing factor (APF) from the following equation [37]. The calculated APF for pristine and doped ZnO is ∼75%, implying that the introduction of Sm did not lead to a significant change in packing fraction, in agreement with earlier studies [37,38]:…”

Section: Xrpd Analysissupporting

confidence: 85%

Structural and optical characterization of Sm-doped ZnO nanoparticles

2019

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“…The L value was computed to be 0.197375 nm, and this is very close to the reported one (0.19767 nm) [34]. Atomic packing factor (APF%) was computed from the following relation [35]:…”

Section: Xrd Analysissupporting

confidence: 74%

Green Synthesis, Structural, In Vitro and Vivo Bioactivity Properties of ZnO Nanoparticles for Biomedical Applications

Ibrahim¹,

Albulym²,

Kayğili³

et al. 2019

Preprint

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Owing to fascinating applications of ZnO in modern devices, it is interesting to explore its more features for future devices. Hence, herein, we have synthesized the high quality ZnO spherical nanoparticles (SNPs) through a facile green synthesis route and robust structural and biomedical studies are carried out. Hexagonal phase with 93.2% crystallinity was confirmed through XRD analysis. ZnO nanoparticles were tested for their bioactivities both in vivo (acute cytotoxicity test) and in vitro (Anti-cancer activities on liver (HepG2) and cervical (Hela) cancer cell lines, stimulatory/inhibitory effects on normal rat splenic cells and hemolytic effects on red blood cells). Results showed that ZnO SNPs has no cytotoxic effects on vital organ like liver and has no hemolytic action on red blood cells. ZnO SNPs showed inhibitory consequence on normal rat splenic cells growth at all tested concentrations. ZnO nanoparticles showed an inhibitory effect on HepG2 cell line. While showed stimulatory effect on Hela cell line. Current study presents the synthesized ZnO SNPs as highly applicable in bio-optoelectronics.

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“…The atomic packing fraction (APF) [43] was calculated using the Eq. (6) The measured value of APF was approximately 75.18%, while for bulk ZnO value of APF is 74%.…”

Section: Characterizationmentioning

confidence: 99%

Bright red luminescence emission of macroporous honeycomb-like Eu3+ ion-doped ZnO nanoparticles developed by gel-combustion technique

Naik

Viswanath

et al. 2020

SN Appl. Sci.

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The impact of europium (Eu 3+) ion doping has been outlined in improving the structure and optical properties of macroporous honeycomb-like zinc oxide (ZnO) nanoparticles, produced by the gel-combustion technique by changing the quantity of dopant. The X-ray diffraction (XRD) research verified that the hexagonal wurtzite structure of ZnO was not disturbed by Eu 3+ substitution. Scherrer method, Scherrer plots (SP), Williamson-Hall (W-H) plots and Size-Strain plots (SSP) were used to estimate the crystallite size. Decreased crystallite size in ZnO:Eu 3+ was noticed along with lower angle shift of XRD peaks and increased lattice parameters such as unit cell volume that can be described as replacement result of Eu 3+ at Zn sites. Fourier transform infrared (FTIR) spectroscopy analysis confirmed the Eu 3+ dopant by moving the peak from 474 cm −1 to 525 cm −1. Field-emission scanning electron microscopy (FESEM) pictures verified macroporous honeycomb-like structures. UV-Visible (UV-Vis) absorption spectroscopic studies show that the ability of ZnO:Eu 3+ nanoparticles concerning the absorption of visible light increased upon Eu 3+ doping with a red shift compared to ZnO nanoparticles. Photoluminescence (PL) emission spectra of Eu 3+ doped ZnO nanoparticles exhibited five intense band emissions at 579, 591, 617, 652, and 706 nm ascribed to 5

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Correlation between structural, optical and magnetic properties of Mn-doped ZnO

Cited by 40 publications

References 50 publications

Structural and optical characterization of Sm-doped ZnO nanoparticles

Structural and optical characterization of Sm-doped ZnO nanoparticles

Green Synthesis, Structural, In Vitro and Vivo Bioactivity Properties of ZnO Nanoparticles for Biomedical Applications

Bright red luminescence emission of macroporous honeycomb-like Eu3+ ion-doped ZnO nanoparticles developed by gel-combustion technique

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