forthcoming articles
The following articles are a selection of those recently accepted for publication in Journal of Applied Crystallography.
See also Forthcoming articles in all IUCr journals.
research papers
Size-exclusion chromatography–small-angle neutron scattering system optimized for an instrument with medium neutron flux
Incorporating a size-exclusion chromatography–small-angle neutron scattering (SANS) system for a SANS instrument with medium neutron flux has resulted in the successful observation of the scattering profiles of target components in complexes.
research papers
Crystallographic, electronic and vibrational properties of 2D silicate monolayers
The present work reports a density functional theory investigation of the structural, electronic, Raman and infrared properties of the (001) monolayer of phlogopite [K(Mg,Fe)3Si3AlO10(OH)2, with Mg/Fe ratio ≥ 2], and how they change with different Fe2+/Mg2+ substitutions in the octahedral sheet.
research papers
research papers
Solid structure of Li2BeF4 (FLiBe) from room temperature to melting studied by neutron and X-ray diffraction
The volume expansion of Li2BeF4 upon melting is 3.8 (4)% at 459°C and 2.9 (4)% if supercooled at 400°C. The equation describing the change in the density of Li2BeF4 due to thermal expansion from room temperature to melting measured by neutron diffraction is ρsolid (kg m−3) = 2184.8 (4) − 0.115 (2) × T (°C). Anisotropic volume expansion occurs in the crystal, and preferred orientation occurs in Li2BeF4 with the a unit-cell axes aligning with the direction of freezing front propagation.
research papers
Electron-density analysis of halide⋯halide through-space magnetic exchange
We analyse both charge and spin degrees of freedom in the electron density of NiX2(3,5-lutidine)4 (X = Cl, Br and I) to understand the nature of magnetic exchange via through-space Ni2+–halide⋯halide–Ni2+ interactions. We propose that remarkably strong through-space magnetic exchange interactions in coordination polymers can occur when the exchange pathway is `switched-on' by just very weak covalency, and can be enhanced by a charge density that is naturally localized on the ligand's atoms that bond to the magnetic metal ions.
research papers
Deep-learning powered desmearing for small-angle scattering
We present a novel deep-learning-based desmearing network (DSNet) that requires minimal simulation data for pre-training before fine-tuning. DSNet demonstrates excellent noise robustness and remarkable generalization performance, validated through both simulations and experiments.
research papers
research papers
A simple and robust high-pressure cell for transmission X-ray investigation
This work presents a simple and robust design for a high-pressure sample environment for in situ transmission X-ray diffraction, scattering and spectroscopy studies that facilitates combination with complementary techniques such as microscopy imaging and Raman spectroscopy. The cell is light; cheap; compatible with solids, gases and liquids; covers a temperature from 100 to 500 K; covers a pressure range from 0 to 350 bar; and exclusively has finger-tight connections.
research papers
An advanced approach combining solid-state NMR with powder diffraction applied to newly synthesized isothiouronium salts
The synthesis of new tetrafluoroborate and bromide salts of isothiouronium compounds is presented, followed by structural and spectroscopic studies, demonstrating that using solid-state NMR-derived intermolecular distances as a restriction can increase the likelihood of finding the crystal structure model when solving a crystal structure from powder diffraction data.
research papers
Integral X-ray diffuse scattering for studying irradiation-induced dislocation loops in single crystals
A computational and experimental investigation of integral X-ray diffuse scattering near Bragg reflections with a wide-open detector is presented for the case of small circular irradiation-induced dislocation loops in metals. The large wavevector asymptotic power-law falloff for such loops is determined computationally and incorporated into numerical and analytical integral X-ray diffuse scattering cross-section calculations. These calculations are shown to enable the experimental determination of the size distribution and concentrations of irradiation-induced dislocation loops in single-crystalline tungsten.
research papers
A comparison of microcrystal electron diffraction and X-ray powder diffraction for the structural analysis of metal–organic frameworks
Microcrystal electron diffraction (microED) was used to determine the crystal structure of a recently synthesized metal–organic framework (MOF) from powder crystallites. The structural descriptions of two other MOFs by microED are compared with results previously published using X-ray powder diffraction supported by density functional theory calculations.