Williamson-hall analysis in estimation of crystallite size and lattice strain in Bi1.34Fe0.66Nb1.34O6.35 prepared by the sol-gel method

Devesa, Susana; Rooney, Aidan; Graça, M.P.F.; Cooper, David; Costa, L. C.

doi:10.1016/j.mseb.2020.114830

Cited by 71 publications

(24 citation statements)

References 17 publications

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“…The average crystallite size (D in nm) has been determined by means of the well-known Debye-Scherrer's formula given by [25]:…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Citric Acid Coated Iron Oxide Nanoparticles as Contrast Agent for Magnetic Resonance Imaging

Alzoubi¹,

Jabaly²,

Noqta³

et al. 2022

Preprint

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Iron oxide nanoparticles (IONPs) were synthesized at varying pH (8 to 12) then subsequently coated with citric acid by co-precipitation as potential magnetic resonance imaging (MRI) contrast agents. The X-ray diffraction patterns confirmed that the structure of the as-synthesized powders is pure nanocrystalline magnetite Fe3O4 phase. FTIR analysis of citric acid-coated IONPs indicated the presence of peaks at 1357.70 and 1533.97 cm− 1, thus confirming the binding of citric acid on the surface of magnetite nanoparticles. Zeta potential measurements indicated that the citric acid-coated IONPs presents much-improved stability compared to bare IONPs; the Zeta potential absolute value is almost three times higher. Finally, citric acid-coated IONPs as a contrast agent for MRI clearly demonstrates their excellent ability to shorten T2 and T1 relaxation times by more than 94.7% and 67.9%, respectively. These results reveal that the citric acid-coated IONPs are excellent candidates for potential biomedical application primarily as MRI contrast agents.

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“…The average crystallite size (D in nm) has been determined by means of the well-known Debye-Scherrer's formula given by [25]:…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Citric Acid Coated Iron Oxide Nanoparticles as Contrast Agent for Magnetic Resonance Imaging

Alzoubi¹,

Jabaly²,

Noqta³

et al. 2022

Preprint

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“…The contribution of crystallite size ( D ) and lattice strain to the broadening of diffraction peaks can be expressed by the following Williamson–Hall (W–H) equation. 17 where ε is the microstrain, β hlk corresponds to the full width at half maximum (FWHM) of the diffraction peak for the ( hlk ) plane, K is the shape factor ( K = 0.9), λ is the Cu Kα radiation wavelength (0.1549 nm) and D W–H is crystallite size. The crystallite size and the microstrain can be obtained from the intercept ( Kλ / D W–H ) and the slope (4 ε ) in the W–H plot of β hlk cos θ versus sin θ , respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The diffraction peak position of Fe 1.5 Cr 0.5 O 3 is shied to the right compared to Fe 2 O 3 , indicating that Cr 3+ ions are well substituted into the hematite unit cells.As increasing the temperature, the crystallinity increases, so the width of the peak narrows and the intensity increases. The contribution of crystallite size (D) and lattice strain to the broadening of diffraction peaks can be expressed by the following Williamson-Hall (W-H) equation 17.…”

mentioning

confidence: 99%

Effect of calcination temperature and Ti substitution on optical properties of (Fe,Cr)₂O₃ cool black pigment prepared by spray pyrolysis

Hwang

Jung

2022

RSC Adv.

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“…The lattice parameters ( a and c ) were calculated using the Bragg equation and the lattice geometry (Equations (3) and (4)) based on the HCP standard unit cell plane and the spacing relationship from (002) and (211) reflections [ 22 , 28 ]:

…”

Section: Resultsmentioning

confidence: 99%

Effect of the Structural and Morphological Properties of Surfactant-Assisted Hydroxyapatite on Dermal Irritation and Antibacterial Activity

et al. 2021

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Hydroxyapatite (HAp) nanoparticles with a homogeneous rod morphology were successfully synthesized using the hydrothermal method. The powders were characterized using Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The antibacterial and dermal irritation analyses of the samples were performed and discussed. The use of cationic and anionic surfactants, namely, cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS), respectively, at a low concentration (2.5 mol%) modified the length/diameter (L/D) ratio of the HAp rods. Structural characterizations of hydroxyapatite synthesized without surfactant (HA), with 2.5 and 5 mol% of SDS (SDS− and SDS+, respectively), and with 2.5 and 5 mol% of CTAB (CTAB− and CTAB+, respectively) revealed well-crystallized samples in the hexagonal phase. The CTAB− sample presented antibacterial activity against Pseudomonas aeruginosa, Escherichia coli, Streptococcus anginosus, Staphylococcus aureus, Micrococcus luteus, and Klebsiella pneumoniae, suggesting that antimicrobial susceptibility was promoted by the bacterial nature and the use of the surfactant. Dermal irritation showed no clinical signs of disease in rabbits during the study, where there was neither erythema nor necrosis at the inoculation sites.

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Williamson-hall analysis in estimation of crystallite size and lattice strain in Bi1.34Fe0.66Nb1.34O6.35 prepared by the sol-gel method

Cited by 71 publications

References 17 publications

Citric Acid Coated Iron Oxide Nanoparticles as Contrast Agent for Magnetic Resonance Imaging

Citric Acid Coated Iron Oxide Nanoparticles as Contrast Agent for Magnetic Resonance Imaging

Effect of calcination temperature and Ti substitution on optical properties of (Fe,Cr)₂O₃ cool black pigment prepared by spray pyrolysis

Effect of the Structural and Morphological Properties of Surfactant-Assisted Hydroxyapatite on Dermal Irritation and Antibacterial Activity

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Williamson-hall analysis in estimation of crystallite size and lattice strain in Bi1.34Fe0.66Nb1.34O6.35 prepared by the sol-gel method

Cited by 71 publications

References 17 publications

Citric Acid Coated Iron Oxide Nanoparticles as Contrast Agent for Magnetic Resonance Imaging

Citric Acid Coated Iron Oxide Nanoparticles as Contrast Agent for Magnetic Resonance Imaging

Effect of calcination temperature and Ti substitution on optical properties of (Fe,Cr)2O3 cool black pigment prepared by spray pyrolysis

Effect of the Structural and Morphological Properties of Surfactant-Assisted Hydroxyapatite on Dermal Irritation and Antibacterial Activity

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Effect of calcination temperature and Ti substitution on optical properties of (Fe,Cr)₂O₃ cool black pigment prepared by spray pyrolysis