Total pattern fitting for the combined size–strain–stress–texture determination in thin film diffraction

Lutterotti, Luca

doi:10.1016/j.nimb.2009.09.053

Cited by 983 publications

(509 citation statements)

References 28 publications

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“…30 X-ray diffraction (XRD) analysis of ZnO NPs and reaction samples was performed in reflection mode on an X'Pert PRO MPD (PANalytical) diffractometer using a CuKα (λ = 0.154 nm) radiation in the 2θ scanning range of 5−80°. The XRD patterns were refined according to the Rietveld method with the material analysis using the diffraction (MAUD) program package 31,32 Environmental Science & Technology ZnO NPs used in this study were mainly spherical in shape with an average particle size of 40 ± 11 nm (size distribution is provided in Figure S1 in Supporting Information) obtained by measuring about 200 single nanoparticles. The isoelectric point (IEP) of ZnO NPs was 9.1, indicative of positive surface charges at pH < 9.1.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Dissolution and Microstructural Transformation of ZnO Nanoparticles under the Influence of Phosphate

Zhang

Luo

et al. 2012

Environ. Sci. Technol.

181

140

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ABSTRACT:The toxicity and fate of nanoparticles (NPs) have been reported to be highly dependent on the chemistry of the medium, and the effects of phosphate have tended to be ignored despite the wide existence of phosphate contamination in aqueous environments. In the present study the influence of phosphate on the dissolution and microstructural transformation of ZnO NPs was investigated. Phosphate at a low concentration rapidly and substantially reduced the release of Zn 2+ into aqueous solution. Synchrotron X-ray absorption spectroscopy and X-ray diffraction analysis reveal that interaction between ZnO NPs and phosphate induced the transformation of ZnO into zinc phosphate. Transmission electronic microscopy observation shows that the morphology of the particles changed from structurally uniform nanosized spherical to anomalous and porous material containing mixed amorphous and crystalline phases of ZnO and zinc phosphate in the presence of phosphate. To our knowledge, this is the first study in which the detailed process of phosphate-induced speciation and microstructural transformation of ZnO NPs has been analyzed. In view of the wide existence of phosphate contamination in water and its strong metal-complexation capability, phosphate-induced transformations may play an important role in the behaviors, fate, and toxicity of many other metal-based nanomaterials in the environment.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Dissolution and Microstructural Transformation of ZnO Nanoparticles under the Influence of Phosphate

Zhang

Luo

et al. 2012

Environ. Sci. Technol.

181

140

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“…In order to obtain temperature variation of the lattice parameter the Rietveld refinement was done for every temperature step (sequential refinement) with the FULLPROF software package [31]. To study atomic structure properties both the whole powder pattern modeling (WPPM) with PM2K software [32,33] and the Rietveld refinement with MAUD software [34] were carried out in order to confirm the validity of the obtained data.…”

Section: B the Wide-angle X-ray Diffractionmentioning

confidence: 99%

“…Also, different types of defects are likely to coexist in the samples, e.g., dislocations as well as stacking faults. The analysis with WPPM and PM2K software [34] together with Rietveld refinement with MAUD software [32,33] was applied for every sample. As a result, a rough estimation of microstrains, crystallite sizes, and stacking fault probabilities was performed and cross checked using two methods mentioned above.…”

Section: Microstructure Of the Nickel Polycrystalline Frameworkmentioning

confidence: 99%

Periodic order and defects in Ni-based inverse opal-like crystals on the mesoscopic and atomic scale

et al. 2014

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The structure of inverse opal crystals based on nickel was probed on the mesoscopic and atomic levels by a set of complementary techniques such as scanning electron microscopy and synchrotron microradian and wide-angle diffraction. The microradian diffraction revealed the mesoscopic-scale face-centered-cubic (fcc) ordering of spherical voids in the inverse opal-like structure with unit cell dimension of 750 ± 10 nm. The diffuse scattering data were used to map defects in the fcc structure as a function of the number of layers in the Ni inverse opal-like structure. The average lateral size of mesoscopic domains is found to be independent of the number of layers. 3D reconstruction of the reciprocal space for the inverse opal crystals with different thickness provided an indirect study of original opal templates in a depth-resolved way. The microstructure and thermal response of the framework of the porous inverse opal crystal was examined using wide-angle powder x-ray diffraction. This artificial porous structure is built from nickel crystallites possessing stacking faults and dislocations peculiar for the nickel thin films.

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“…The low angle XRD data was refined for the peaks indicated in Fig. 1, following the Rietveld method with the MAUD software 17 and using ICSD data base. The low angle diffraction curve was obtained about one year after 18 the diffraction curve presented in the inset of Fig.…”

confidence: 99%

Anomalous metamagnetic-like transition in a FeRh/Fe3Pt interface occurring at T ≈ 120 K in the field-cooled-cooling curves for low magnetic fields

et al. 2012

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We report on the magnetic properties of a special configuration of a FeRh thin film. An anomalous behavior on the magnetisation vs. temperature was observed when low magnetic fields are applied in the plane of a thin layer of FeRh deposited on ordered Fe3Pt. The anomalous effect resembles a metamagnetic transition and occur only in the field-cooled-cooling magnetisation curve at temperatures near 120 K in samples without any heat treatment

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Total pattern fitting for the combined size–strain–stress–texture determination in thin film diffraction

Cited by 983 publications

References 28 publications

Dissolution and Microstructural Transformation of ZnO Nanoparticles under the Influence of Phosphate

Dissolution and Microstructural Transformation of ZnO Nanoparticles under the Influence of Phosphate

Periodic order and defects in Ni-based inverse opal-like crystals on the mesoscopic and atomic scale

Anomalous metamagnetic-like transition in a FeRh/Fe3Pt interface occurring at T ≈ 120 K in the field-cooled-cooling curves for low magnetic fields

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