Crystallography Reports
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Calibration of CryojetHT and Cobra Plus Cryosystems used in X-ray diffraction studies
Crystallography Reports - Tập 61 - Trang 692-696 - 2016
CryoJetHT (Oxford Instruments) and Cobra Plus (Oxford Cryosystems) cryosystems, which are used for sample cooling in X-ray diffraction experiments, have been calibrated. It is shown that the real temperature in the vicinity of the sample differs significantly (the deviation is as high as 8–10 K at low temperatures) from the temperature recorded by authorized sensors of these systems. The calibrati...... hiện toàn bộ
Growth surface topography of kaolinite-group minerals and their simulation based on the regular sequence of enantiomorphic layers
Crystallography Reports - Tập 59 - Trang 594-606 - 2014
The regularities of manifestation of polytypism in a number of kaolinite-group minerals (kaolinite, dickite, halloysite, and nacrite) have been investigated by transmission electron microscopy and vacuum decoration. Growth patterns of elementary layers with a thickness of 7 Å, individual for each polytype, were observed on (001) faces of microcrystals. Specific features of the growth patterns of p...... hiện toàn bộ
Complexes of Nitrilotriacetic Acid with Amines. Molecular Structures of 2-Ammonioethanol Nitrilotriacetate and Bis{2-Ammonio-2-(Hydroxymethyl)propane-1,3-Diol} Nitrilotriacetate
Crystallography Reports - - 2021
Improper ferromagnetic phase transitions in crystals
Crystallography Reports - Tập 50 - Trang 814-816 - 2005
A complete set of possible improper phase transitions leading to polarization and magnetization of crystals is found from tensor bases of representations of the black-and-white point group of crystal symmetry by using the multiplication table of irreducible representations. The dependences of the secondary order parameter on the primary order parameter are presented for different classes of the sy...... hiện toàn bộ
Structural basis for the mechanism of inhibition of uridine phosphorylase from Salmonella typhimurium
Crystallography Reports - Tập 55 Số 1 - Trang 41-57 - 2010
Structure and properties of antimony-doped potassium titanyl phosphate single crystals
Crystallography Reports - Tập 50 - Trang 554-565 - 2005
Antimony-doped potassium titanyl phosphate (KTP) crystals of the composition KTiOPO4 are studied by X-ray diffraction analysis. It is shown that, with an increase of antimony content in KTP crystals, the occupancies of potassium positions change and new additional positions for potassium atoms arise. The formation of additional vacancies and splitting of the potassium-cation positions explain the ...... hiện toàn bộ
Nanostructured crystals of fluorite phases Sr1 − x R x F2 + x and their ordering: 9. The defect crystal and real structure of quenched fluorite phases Sr1 − x Ce x F2 + x (x = 0–0.5)
Crystallography Reports - Tập 59 - Trang 14-21 - 2014
A Sr0.7Ce0.3F2.3 crystal (CaF2 type, sp. gr.
$$Fm\bar 3m$$
), obtained by quenching from melt, has been studied for the first time by X-ray diffraction. Fluorine vacancies and interstitial anions are found in the 8c and 32f sites, respectively. The defect ratio in the Sr0.7Ce0.3F2.3 structure corresponds ...... hiện toàn bộ
Nonlinear effects in propagation of radiation of X-ray free-electron lasers
Crystallography Reports - Tập 61 - Trang 345-355 - 2016
Nonlinear effects accompanying the propagation of high-intensity beams of X-ray free-electron lasers are considered. It is shown that the X-ray wave field in the crystal significantly changes due to the formation of “hollow” atomic shells as a result of the photoelectric effect.
Development of X-ray Methods for Studying Protein Planar Systems on a Liquid Surface Using Synchrotron Radiation
Crystallography Reports - Tập 68 - Trang 97-103 - 2023
The structure of Langmuir lysozyme films on a liquid surface, formed from crystallization solutions with addition of metal chlorides as a precipitant, have been investigated. The thicknesses and densities of the films were determined using the X-ray reflectivity technique, and the concentration distribution profiles of the sulfur atoms present in protein molecules, as well as precipitant ions in t...... hiện toàn bộ
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