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Lithium tantalate (LiTaO3, LT) wafers of different colors were prepared through chemical reduction of regular congruent LT wafers. Samples with different colors corresponding to different annealing temperatures were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and...
Precise lattice strains measured using high-resolution neutron diffraction from a solid polycrystalline sample are used to explore the single-crystal elastic constants of -Al2O3 (corundum). The analysis confirms a recent suggestion that, contrary to the long-accepted view, the sign of s14 should...
An evaluation of the Bruker SMART X2S for the collection of crystallographic diffraction data, structure solution and refinement is carried out with a variety of materials with different electron densities, presenting some of the successes and challenges of automation in chemical crystallography.
A new program for basic powder pattern manipulations and visualization is described. It provides a user-friendly interface for comparison of spectra with each other and with simulated patterns based on single-crystal data. The program contains all necessary tools for the preparation of routine...
The growth in complexity of quantum mechanical software packages for modelling the physicochemical properties of crystalline materials may hinder their usability by the vast majority of non-specialized users. Consequently, a free operating-system-independent graphical user interface (GUI) has...
Natural and synthetic diamonds with various concentrations and types of point and extended defect were investigated using X-ray topography employing allowed (111, 004) and forbidden (222) reflections. On the topographs of the forbidden reflections, weak stress fields from lattice imperfections...
The application of terahertz time-domain spectroscopy and imaging to the study of proteins in crystalline form is demonstrated. Terahertz time-domain spectroscopy is particularly sensitive to the long-range ordering of molecules, with proven utility for the spectroscopy of crystalline biological...
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