The following articles are a selection of those recently accepted for publication in Journal of Applied Crystallography.
High Temperature Raman Spectroscopy of Cs2O-B2O3-MoO3 System for CsB3O5 Crystal Growth
Raman spectroscopy at high temperature has been applied to study in situ the microstructure of the solution in a Cs2O-B2O3-MoO3 growth system. The Raman spectra near the interface show that in the boundary anisomerization reaction from 3- to 4-coordinated boron occurred.
The Stanford Automated Mounter: pushing the limits of sample exchange at the SSRL macromolecular crystallography beamlines
The Structural Molecular Biology (SMB) group at SSRL has upgraded its crystal mounting robot (SAM) to enable a pin exchange time of approximately 25 s during automated screening of samples.
Boron carbide composite apertures for small-angle neutron scattering made by 3-D printing
Apertures for small-angle neutron scattering experiments and other precision components can be prepared with boron carbide/polymer composites by 3-D printing. Use of 10B enriched material gives a low level of background scattering.
X-ray absorption spectroscopy and density functional analysis of the Fe3+ distribution profile on Al sites in a chrysoberyl crystal, BeAl2O4:Fe3+
This work uses a novel synchrotron technique to characterize the distribution of Fe in chrysoberyl. The results show very good agreement on comparison of measurement and calculation to confirm the validity of this technique.
Growth of bainitic ferrite and carbon partitioning during the early stages of bainite transformation in a 2 mass% silicon steel studied by in situ neutron diffraction, TEM and APT
The current work investigates key aspects of the evolution of nano-bainite formation at low isothermal temperature during the early stages of the transformation in a high Si steel using neutron diffraction, transmission electron microscopy (TEM) and atom probe tomography (APT) techniques.
Full-pattern analysis of time-of-flight neutron transmission of mosaic crystals
A least-squares full-pattern analysis of the wavelength-dependent neutron transmission of mosaic crystals provides precise values of the spatial variation of lattice parameters, orientation, mosaicity and extinction factors in macroscopic specimens.
Taking a look at the calibration of a CCD detector with a fiber-optic taper
Check of the flat-field calibration showed good agreement with the manufacturer's calibration. A position-specific effect was detected that requires an additional correction to scale diffraction data properly. The source of this effect is uncorrectable by the flat-field correction spatial variation of the fiber-optic taper point-spread function resulting in a modulation of sharp features.
Annular beam high-intensity X-ray diffraction based on an ellipsoidal single-bounce monocapillary
An ellipsoidal single-bounce monocapillary is employed to produce an annular X-ray beam, and the focal construct geometry high-intensity angular-dispersive X-ray diffraction technique is presented.
In situ time-resolved SAXS observation of the fractal aggregation process in tin alkoxide polymeric solution
This paper concerns the study through SAXS experiments of the aggregation process in polymeric solutions used for the elaboration of nanosized tin oxide crystals. This paper is part of a larger work focused on the determination of aggregation mechanisms of gelation of polymeric solutions. All the SAXS measurements have been performed in situ on the BM02 beamline at the ESRF.
Performance evaluation and optimization of X-ray stress measurement for nickel aluminium bronze based on the Bayesian method
To help deal with the failure phenomena frequently encountered in the residual stress measurement of nickel aluminium bronze, a new approach based on the Bayesian model class framework is proposed to evaluate and improve the performance of current X-ray stress measurement analysis.
Monoclinic MA domains in anisotropically strained ferroelectric K0.75Na0.25NbO3 films on (110) TbScO3 grown by MOCVD
The ferroelectric domain structure of 30 nm thin K0.75Na0.25NbO3 films grown on (110) TbScO3 substrates using metal–organic chemical vapour deposition (MOCVD) was investigated with piezoresponse force microscopy and X-ray diffraction. A monoclinic MA phase (together with a 90° rotated variant) could be identified with a highly perfect periodic domain pattern of narrow lateral domains of 25 nm in size extending over several micrometres.
Structure determination of a pseudo-decagonal quasicrystal approximant by the strong-reflections approach and rotation electron diffraction
The structure of a complex pseudo-decagonal quasicrystal approximant PD1 was solved on the basis of the strong reflections of the known related structure PD2, and finally confirmed by three-dimensional rotation electron diffraction.