Andrew N. Fitch
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View article: The impact of scanning strategy on cell structures in PBF-LB/M/IN718: an in situ synchrotron x-ray diffraction study
The impact of scanning strategy on cell structures in PBF-LB/M/IN718: an in situ synchrotron x-ray diffraction study Open
View article: Speciation and Radiation Stability of Cr and Ln “Grey-Phases” within Cr-doped (Ln,U)O 2 Spent Fuel Model Materials
Speciation and Radiation Stability of Cr and Ln “Grey-Phases” within Cr-doped (Ln,U)O 2 Spent Fuel Model Materials Open
Cr-doped UO₂ fuels are increasingly adopted for their superior in-reactor performance compared to undoped UO₂, but their spent fuel behaviour, particularly potential Cr speciation and fission product reactivity, remains poorly understood. …
View article: Tailoring Oxide/MAX Phase Nanocomposites via Low‐Temperature Oxidation for Lithium‐Ion Battery Anodes: Peeking Behind the Electrochemical Mechanism via In Situ Investigations
Tailoring Oxide/MAX Phase Nanocomposites via Low‐Temperature Oxidation for Lithium‐Ion Battery Anodes: Peeking Behind the Electrochemical Mechanism via In Situ Investigations Open
This study explores the potential of MAX phase/oxide nanocomposites as negative electrodes for lithium‐ion batteries. The main objective is to enhance the stability and performance of tin oxide‐based electrodes by reducing volume changes u…
View article: A reference material for X-ray diffraction line profile analysis
A reference material for X-ray diffraction line profile analysis Open
A nanocrystalline Fe–1.8%Cr steel powder was tested as a reference material on more than five powder diffraction instruments and configurations, as well as with different data-analysis methodologies. The material, commercially available at…
View article: Exploring humidity effects on polycrystalline human insulin–ligand complexes: preliminary crystallographic insights
Exploring humidity effects on polycrystalline human insulin–ligand complexes: preliminary crystallographic insights Open
This study investigates the effect of relative humidity (RH) on the crystal structures of human insulin (HI) complexes with organic ligands, m -cresol and m -nitrophenol, using in situ X-ray powder diffraction (XRPD) with a controlled-humi…
View article: Tailoring Magnetic Properties of Cubic Spinel Ferrite Core–Shell Nanoparticles for Magnetoresistive Engineering
Tailoring Magnetic Properties of Cubic Spinel Ferrite Core–Shell Nanoparticles for Magnetoresistive Engineering Open
Magnetite nanoparticles with a cobalt ferrite shell provide the opportunity to obtain a tunneling magnetoresistance structure and offer an additional degree of freedom in shaping the magnetoresistive characteristics. In order to investigat…
View article: Synchrotron investigation of heat treatment effects on the 3D residual stress distribution in laser powder bed fused AlSi7Mg alloys
Synchrotron investigation of heat treatment effects on the 3D residual stress distribution in laser powder bed fused AlSi7Mg alloys Open
For the first time, we utilized synchrotron diffraction to determine 3D maps of residual stresses across the entire volume of thick AlSi7Mg alloy prisms produced by PBF-LB. Samples were subjected to different heat treatment processes: dire…
View article: Bioinspired Halochromic Crystallization of Calcium Carbonate
Bioinspired Halochromic Crystallization of Calcium Carbonate Open
Colors in biominerals mainly arise from the presence of small organic pigments occluded during biomineralization processes, however the physicochemical origin of hues has been overlooked. Here, inspired by sea urchins, colored calcite crys…
View article: The Oxidized Ti<sub>2</sub>(Al/Sn)C Behavior as Anode for Lithium‐ and Sodium‐Ion Batteries: The Role of the MAX Phase Order
The Oxidized Ti<sub>2</sub>(Al/Sn)C Behavior as Anode for Lithium‐ and Sodium‐Ion Batteries: The Role of the MAX Phase Order Open
In the recent framework of the studies of Sn‐doped MAX phase materials for potential applications as negative electrode materials in alkaline‐ion batteries, this work explores the potentiality of the pure 211 MAX phase Ti 2 Al (1– y ) Sn y…
View article: Near-Equilibrium Transformation Sequence of NiCrBSi Self-Fluxing Nickel Alloy
Near-Equilibrium Transformation Sequence of NiCrBSi Self-Fluxing Nickel Alloy Open
NiCrBSi alloys are widely used as wear-resistant deposits. However, despite several studies, there are still some remaining questions concerning their microstructure and the transformation sequence during solidification. This study investi…
View article: High resolution powder diffraction at the ESRF
High resolution powder diffraction at the ESRF Open
The ESRF has operated a dedicated high-resolution powder diffraction beamline for users since May 1996. Originally built on bending magnet BM16, the beamline has been moved twice, to insertion device ID31 in 2002, and to ID22 in 2014. Foll…
View article: New Materials for Lithium Ion Batteries Electrodes: Nanocomposite From Low Temperature Oxidation of MAX Phase as Negative Electrode for Lithium Ion Batteries
New Materials for Lithium Ion Batteries Electrodes: Nanocomposite From Low Temperature Oxidation of MAX Phase as Negative Electrode for Lithium Ion Batteries Open
View article: Local Symmetry Breaking in Skyrmion-Hosting Centrosymmetric Hexagonal Compounds
Local Symmetry Breaking in Skyrmion-Hosting Centrosymmetric Hexagonal Compounds Open
Dzyaloshinskii-Moriya interaction (DMI) plays a crucial role in stabilizing the exotic topologically stable skyrmion spin textures in the noncentrosymmetric crystals. The recent discovery of biskyrmions and skyrmions in the globally centro…
View article: Nanosheets of a Layered Metal–Organic Framework for Separation of CO<sub>2</sub>/CH<sub>4</sub> using Mixed Matrix Membranes
Nanosheets of a Layered Metal–Organic Framework for Separation of CO<sub>2</sub>/CH<sub>4</sub> using Mixed Matrix Membranes Open
Mixed matrix membranes represent an important technology for gas separations. Nanosheets of metal-organic framework (MOF) materials of high aspect ratio and size-selective gas transport properties have the potential to promote the efficien…
View article: Structural Evolution of the Pharmaceutical Peptide Octreotide upon Controlled Relative Humidity and Temperature Variation
Structural Evolution of the Pharmaceutical Peptide Octreotide upon Controlled Relative Humidity and Temperature Variation Open
Octreotide is the first synthetic peptide hormone, consisting of eight amino acids, that mimics the activity of somatostatin, a natural hormone in the body. During the past decades, advanced instrumentation and crystallographic software ha…
View article: Structural Evolution of the Pharmaceutical Peptide Octreotide upon Controlled Relative Humidity and Temperature Variation
Structural Evolution of the Pharmaceutical Peptide Octreotide upon Controlled Relative Humidity and Temperature Variation Open
Octreotide is the first synthetic peptide hormone, consisted of eight amino acids, that mimics the activity of somatostatin, a natural hormone in the body. During the past decades, advanced instrumentation and crystallographic software est…
View article: Real Structure, Magnetism and Chemical Bonding of SmSi<sub>3−x</sub>
Real Structure, Magnetism and Chemical Bonding of SmSi<sub>3−x</sub> Open
New metastable SmSi 3−x ( x =0–0.05) is obtained by high‐pressure high‐temperature synthesis (9.5 GPa, 870–1270 K). Powder diffraction data refinements reveal that the crystal structure of SmSi 3 is isotypic to that of YbSi 3 (space group …
View article: Evolution of interphase stress over a crack propagation plane as a function of stress relief heat treatments in a PBF‐LB/M AlSi10Mg alloy
Evolution of interphase stress over a crack propagation plane as a function of stress relief heat treatments in a PBF‐LB/M AlSi10Mg alloy Open
In this study, we compare the residual stress state in a laser powder bed fusion (PBF‐LB/M) AlSi10Mg alloy in the as‐built (AB) condition with that after two different heat treatments (265 °C for 1 h, HT1; and 300 °C for 2 h, HT2). The bul…
View article: Revisiting Solid–Solid Phase Transitions in Sodium and Potassium Tetrafluoroborate for Thermal Energy Storage
Revisiting Solid–Solid Phase Transitions in Sodium and Potassium Tetrafluoroborate for Thermal Energy Storage Open
In situ synchrotron powder X-ray diffraction (PXRD) study was conducted on sodium and potassium tetrafluoroborate (NaBF4 and KBF4) to elucidate structural changes across solid-solid phase transitions over multiple hea…
View article: Equilibrium Transformation Sequence of Nicrbsi Self-Fluxing Nickel Alloy
Equilibrium Transformation Sequence of Nicrbsi Self-Fluxing Nickel Alloy Open
View article: CSD 2271659: Experimental Crystal Structure Determination
CSD 2271659: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2270866: Experimental Crystal Structure Determination
CSD 2270866: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: A-Site Cation Disorder in Sr<sub><i>x</i></sub>Ba<sub>1–<i>x</i></sub>Nb<sub>2</sub>O<sub>6</sub> (<i>x</i> = 0.25, 0.33, 0.50, 0.61) Studied by High-Resolution Resonant X-ray Powder Diffraction
A-Site Cation Disorder in Sr<sub><i>x</i></sub>Ba<sub>1–<i>x</i></sub>Nb<sub>2</sub>O<sub>6</sub> (<i>x</i> = 0.25, 0.33, 0.50, 0.61) Studied by High-Resolution Resonant X-ray Powder Diffraction Open
The dielectric and ferroelectric properties of SrxBa1-xNb2O6 (SBN, 0.2 < x < 0.8) are known to be affected by the Sr fraction and can be further controlled by various quenchi…
View article: Hydrogen bonding patterns and C—H...π interactions in the structure of the antiparkinsonian drug (<i>R</i>)-rasagiline mesylate determined using laboratory and synchrotron X-ray powder diffraction data
Hydrogen bonding patterns and C—H...π interactions in the structure of the antiparkinsonian drug (<i>R</i>)-rasagiline mesylate determined using laboratory and synchrotron X-ray powder diffraction data Open
The structure of ( R )-rasagiline mesylate [( R )-RasH + ·Mes − ], an active pharmaceutical ingredient used to treat Parkinson's disease, is presented. The structure was determined from laboratory and synchrotron powder diffraction data, r…
View article: Investigation of CO<sub>2</sub> adsorption on a selection of zeolites by combining <i>in situ</i> high-resolution powder X-ray diffraction, isotherm modeling and simulation
Investigation of CO<sub>2</sub> adsorption on a selection of zeolites by combining <i>in situ</i> high-resolution powder X-ray diffraction, isotherm modeling and simulation Open
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View article: Crystal Structures and Twinning of RuBr<sub>3</sub>
Crystal Structures and Twinning of RuBr<sub>3</sub> Open
The concerted experimental and computational study reports on the polymorphic behavior of RuBr 3 . Highly‐resolved X‐ray powder diffraction measurements of the modification lt ‐RuBr 3 give direct evidence for peak splitting substantiating …
View article: ID22 – the high-resolution powder-diffraction beamline at ESRF
ID22 – the high-resolution powder-diffraction beamline at ESRF Open
Following Phase 2 of the upgrade of the ESRF in which the storage ring was replaced by a new low-emittance ring along with many other facility upgrades, the status of ID22, the high-resolution powder-diffraction beamline, is described. The…
View article: EIGER2 hybrid-photon-counting X-ray detectors for advanced synchrotron diffraction experiments
EIGER2 hybrid-photon-counting X-ray detectors for advanced synchrotron diffraction experiments Open
The ability to utilize a hybrid-photon-counting detector to its full potential can significantly influence data quality, data collection speed, as well as development of elaborate data acquisition schemes. This paper facilitates the optima…
View article: The T<sub>2</sub> structure of polycrystalline cubic human insulin
The T<sub>2</sub> structure of polycrystalline cubic human insulin Open
The polymorphism of human insulin upon pH variation was characterized via X-ray powder diffraction, employing a crystallization protocol previously established for co-crystallization with phenolic derivatives. Two distinct rhombohedral ( R…
View article: CSD 2218506: Experimental Crystal Structure Determination
CSD 2218506: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…