Published in Crystallography Reports
AbstractThe relationship of morphological spectra (sets of data on the morphological types of real polyhedral crystals and their probabilities under current physicochemical conditions of natural process) is shown for different simple crystallographic forms. The methods for constructing generalized and open polyhedra, reducing the multiplicity of sy...
Published in Crystallography Reports
AbstractA detailed analysis of the inner structure and specific features of mummification and decoration of ancient Egyptian mummy from the Pushkin State Museum of Fine Arts, inventory no. I,1а 1240, has been performed by X-ray computed tomography. The mummy origin and dating are refined using the complementary method of comparative historical stud...
Published in Crystallography Reports
AbstractThe thermal and mesophase behaviour of a mixture of 4-octylbenzoic acid and 4,4'-bipyridine is studied. The complex shows appearance of two distinct phases which otherwise are not present in any of these constituents. Polarizing optical microscopy and differential scanning calorimetry indicate that the mixture displays liquid crystalline pr...
Published in Crystallography Reports
AbstractCrystallographic texture causes anisotropic formability of metal sheets, which results in the formation of uneven cup heights during deep drawing, called earing. Over the past decades, several methods had been developed to predict the earing behaviour of aluminium alloys. These methods are rather complex and can only be applied within stric...
Published in Crystallography Reports
AbstractThe potential and prospects of X-ray absorption spectroscopy (XAS) as a tool for studying biological systems and as an additional technique for increasing the crystallographic data accuracy have been considered. The advantages of these techniques for analyzing biological systems with low concentrations of elements studied and the possibilit...
Published in Crystallography Reports
Abstract―Based on Hall effect measurements it is shown that quenching of complexly doped Ge〈Zn,Сu〉 crystals at 1070–1100 K leads to the formation of additional electrically active donor centers with activation energy Еd = Еc – 93 meV in them. Further annealing of crystals at 550–570 K leads to disappearance of these centers. The most likely model o...
Published in Crystallography Reports
A medieval Russian bronze pendant icon with enamel images, dated to the period from the 12th to the first half of the 13th century was studied. The investigation was performed using neutron and synchrotron tomography, X-ray fluorescence analysis, and neutron and synchrotron X-ray diffraction analysis. The product was found to have no strips dividin...
Published in Crystallography Reports
AbstractThe crystal and molecular structure of a new polymorph of four-coordinated Zn(II) tetraphenylporphyrin, with formula ZnTPP (TPP = 5,10,15,20-tetraphenyl porphyrin) has been determined from 3D X-ray diffraction data. The new polymorph crystallizes in the tetragonal space group, I4/m with cell dimensions a = 13.4206(9), c = 9.7210(16) Å, V = ...
Published in Crystallography Reports
AbstractZinc oxide layers have been synthesized by magnetron sputtering of ZnO:Ga ceramic and ZnO:Ga + 10 wt % Zn cermet targets in an Ar atmosphere and by reactive sputtering of a zinc target in an Ar–O2 atmosphere. The effect of working gas pressure in the chamber on the growth and structure of ZnO layers has been studied. It has been established...
Published in Crystallography Reports
AbstractThe statistical regularities of collective crystal growth under isotropic/anisotropic conditions are described based on the adsorption-fluctuation dislocation growth model. A version of realization of the Curie symmetry principle for an open stationary nonequilibrium system, described by random processes, is presented. The form of manifesta...
