Structural characterization and X-ray analysis by Williamson–Hall method for Erbium doped Aluminum Nitride nanoparticles, synthesized using inert gas condensation technique

Pandya, Sneha G.; Corbett, Joseph; Jadwisienczak, Wojciech M.; Kordesch, Martin E.

doi:10.1016/j.physe.2015.12.013

Cited by 58 publications

(18 citation statements)

References 26 publications

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“…It means that the NPs subjected to MW treatment are more appropriate for theoretical analysis via Williamson-Hall method comparing to the 1 : 0.8 PLNP and the 1 : 1 PLNPs demonstrating the most irregular shape and the broadest size distribution and, as a consequence, smaller values of the Pearson coefficient. Finally, it is noteworthy to say that the Debye-Scherrer diameters are less than the Williamson-Hall ones which is in accordance with [47]. In this case, the Debye-Scherrer formula provides only a lower bound for the crystallite size.…”

supporting

confidence: 73%

“…The Williamson-Hall plots for the SLNPs and the PLNPs are shown in Figure 10(a). The Williamson-Hall method assumes that the particles are isotropic in shape and the size of strains in different crystallographic directions are similar 10 Journal of Nanomaterials [47]. The TEM data, Debye-Scherrer, and Williamson-Hall calculations are listed in Table 5.…”

Section: The Williamson-hallmentioning

confidence: 99%

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Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Pudovkin

Koryakovtseva

Lukinova

et al. 2019

Journal of Nanomaterials

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A set of Pr3+:LaF3 nanoparticles (NPs) were synthesized via coprecipitation method at three stoichiometric proportions of La(NO3)3, Pr(NO3)3, and NaF (1 : 0.8, 1 : 1, and 1 : 6, respectively). Two ways of mixing of the La(NO3)3, Pr(NO3)3, and NaF solutions (dropwise and swift addition) were used. One sample was subjected to microwave (MW) treatment for 30, 90, and 180 min. All the samples were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). For all the samples, optical spectroscopy experiments were carried out. The XRD data were analyzed via the Debye-Scherrer and Williamson-Hall methods. It was revealed that the way of mixing of the La(NO3)3, Pr(NO3)3, and NaF solutions strongly affects the shape of the NPs. The slow dropwise addition of the NaF solution leads to the plate-like NP (PLNP) formation; otherwise, the swift addition of the NaF solution leads to the formation of more sphere-like NPs (SLNPs). The size and regularity in shape of the NP increase with the increasing stoichiometric proportion of La(NO3)3, Pr(NO3)3, and NaF from 1 : 0.8 to 1 : 6. The size and regularity in shape of the SLNPs increase with the increasing time of MW treatment. The Debye-Scherrer and Williamson-Hall methods confirmed the anisotropic shape of the PLNPs. The Williamson-Hall method showed that the values of strain are almost similar for all the samples (around 14∗10-4). Optical spectroscopy experiments revealed that although all the samples have an equal chemical composition, the luminescence lifetimes for different samples differ between each other. The luminescence lifetime of the PLNPs is less than that of the SLNPs having an equal stoichiometric proportion of La(NO3)3, Pr(NO3)3, and NaF. The luminescence lifetime of the 1 : 1 SLNPs increases with the increasing time of MW treatment.

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supporting

confidence: 73%

Section: The Williamson-hallmentioning

confidence: 99%

Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Pudovkin

Koryakovtseva

Lukinova

et al. 2019

Journal of Nanomaterials

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“…Also, the anisotropic nature of the elastic constants of the crystal can be incorporated in the Williamson-Hall analysis by using uniform deformation stress (UDSM) or uniform deformation energy density (UDEDM) models [8,12,13]. A number of reports on the Williamson-Hall analysis of nanostructured samples of different kinds have appeared in the literature in the recent past [6,[12][13][14][15][16][17][18][19][20][21][22][23]. A perusal of these reports reveals that models which take into account the anisotropic nature of the crystal, viz., UDSM and UDEDM often more correctly model the system than the one which does not take the anisotropy into account viz., UDM [6,[13][14][15][16][17]20].…”

Section: Introductionmentioning

confidence: 99%

X-ray diffraction line profile analysis of nanostructured nickel oxide: Shape factor and convolution of crystallite size and microstrain contributions

Maniammal

Madhu

Biju

2017

Physica E: Low-dimensional Systems and Nanostructures

136

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“…Indeed, over the past decade, interest in nanothermometry based on rare-earth-doped fluoride nanoparticles has increased significantly [22][23][24][25]. On the one hand, nanosized dimensionality of the luminescent nanothermometers allows them to come into contact with the studied small system providing accurate and precise temperature measurement [16].…”

Section: Introductionmentioning

confidence: 99%

Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Pudovkin

Koryakovtseva

Lukinova

et al. 2019

Advances in Materials Science and Engineering

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Core Pr3+ : LaF3 (CPr = 1%) plate-like nanoparticles (nanoplates), core/shell Pr3+ : LaF3 (CPr = 1%)/LaF3 nanoplates, core Pr3+ : LaF3 (CPr = 1%) sphere-like nanoparticles (nanospheres), and core/shell Pr3+ : LaF3 (CPr = 1%)/LaF3 nanospheres were synthesized via the coprecipitation method of synthesis. The nanoparticles (NPs) were characterized by means of transmission electron microscopy, X-ray diffraction, and optical spectroscopy. The formation of the shell was proved by detecting the increase in physical sizes, sizes of coherent scattering regions, and luminescence lifetimes of core/shell NPs comparing with single core NPs. The average physical sizes of core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres were 62.2 ± 0.9, 74.7 ± 1.2, 13.8 ± 0.9 and 22.0 ± 1.2 nm, respectively. The formation of the NP shell led to increasing of effective luminescence lifetime τeff of the 3P0 state of Pr3+ ions for the core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres the values of τeff were 2.3, 3.6, 3.2, and 4.7 μsec, respectively (at 300 K). The values of absolute sensitivity Sa for fluorescence intensity ratio (FIR) thermometry was 0.01 K−1 at 300 K for all the samples. The FIR sensitivity can be attributed to the fact that 3P1 and 3P0 states share their electronic populations according to the Boltzmann process. The values of Sa for lifetime thermometry for core nanoplates, core/shell nanoplates, core nanospheres, and core/shell nanospheres were (36.4 ± 3.1) · 10−4, (70.7 ± 5.9) · 10−4, (40.7 ± 2.6) · 10−4, and (68.8 ± 2.4) · 10−4 K−1, respectively.

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Structural characterization and X-ray analysis by Williamson–Hall method for Erbium doped Aluminum Nitride nanoparticles, synthesized using inert gas condensation technique

Cited by 58 publications

References 26 publications

Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

X-ray diffraction line profile analysis of nanostructured nickel oxide: Shape factor and convolution of crystallite size and microstrain contributions

Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

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Structural characterization and X-ray analysis by Williamson–Hall method for Erbium doped Aluminum Nitride nanoparticles, synthesized using inert gas condensation technique

Cited by 58 publications

References 26 publications

Characterization of Pr-Doped LaF3 Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Characterization of Pr-Doped LaF3 Nanoparticles Synthesized by Different Variations of Coprecipitation Method

X-ray diffraction line profile analysis of nanostructured nickel oxide: Shape factor and convolution of crystallite size and microstrain contributions

Luminescence Nanothermometry Based on Pr3+ : LaF3 Single Core and Pr3+ : LaF3/LaF3 Core/Shell Nanoparticles

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Product

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Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles