A5069263710- Solid-state spectroscopy and crystallography
- Crystal Structures and Properties
- Nonlinear Optical Materials Research
- Crystallography and molecular interactions
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Chemical and Physical Properties in Aqueous Solutions
- Physics of Superconductivity and Magnetism
- Chemical Thermodynamics and Molecular Structure
- Iron-based superconductors research
- High-pressure geophysics and materials
- Crystal structures of chemical compounds
- Advanced Condensed Matter Physics
- Optical and Acousto-Optic Technologies
- Rare-earth and actinide compounds
- Carbon Nanotubes in Composites
- Multiferroics and related materials
- Inorganic Fluorides and Related Compounds
- Zeolite Catalysis and Synthesis
- Acoustic Wave Resonator Technologies
- Luminescence Properties of Advanced Materials
- Electrochemical Analysis and Applications
- Advanced Chemical Sensor Technologies
- Inorganic Chemistry and Materials
- Chemical Synthesis and Characterization
A.V. Shubnikov Institute of Crystallography
2015-2024
Russian Academy of Sciences
2015-2024
Federal Scientific Research Centre Crystallography and Photonics
2016-2024
Kurchatov Institute
2024
National Center for Toxicological Research
2012
Instituto Superior Técnico
2012
Osaka Prefecture University
2011
University of the Free State
2010
University of Freiburg
2010
To reveal the structural conditionality for anomalies in physical properties, including dielectric and optical diffraction studies of K9H7(SO4)8·H2O crystals were performed using synchrotron radiation temperature range 293-450 K determined at 405 K, taking H atoms into account. The results indicate that occurrence high conductivity with a increase is associated outward diffusion water molecules, hydrogen-bond network rearrangement formation channels possible motion K(+) ions. A rearranged...
The potential of resonant inelastic soft x-ray scattering to measure $4f$ crystal electric-field excitation spectra in Ce Kondo lattices has been examined. Spectra have obtained for several systems and show a well-defined structure determined by crystal-field, spin-orbit, charge-transfer excitations only. spectral shapes the can be well understood framework atomic multiplet calculations. For ${\mathrm{CeCu}}_{2}{\mathrm{Si}}_{2}$ we found notable disagreement between x-ray-scattering...
Cs 3 (HSO 4 ) 2 (H PO and single crystals were obtained for the first time based on a systematic study of phase diagram CsHSO –CsH –H O ternary system. To reveal structural conditionality anomalies in physical properties, including dielectric optical diffraction studies crystal structure performed, their common features differences analyzed.
Single crystals of [K1-x(NH4)x]3H(SO4)2 (x ≥ 0.57) grown in the K3H(SO4)2-(NH4)3H(SO4)2-H2O water-salt system are studied. The atomic structure including H atoms was determined at room temperature using X-ray structural analysis. have trigonal symmetry and disordered hydrogen-bond networks ambient conditions similar to high-temperature phases K3H(SO4)2, (NH4)3H(SO4)2 other superprotonic compounds M3H(AO4)2. Impedance measurements performed on single show high values conductivity...
The phase diagram of the CsHSO4–CsH2PO4–H2O ternary system was systematically studied, from which it became possible to synthesize and grow new compounds mixed sulfate-phosphates cesium. Based on experimental data, their common structural features differences, conditionality for anomalies in physical properties were analyzed.
Using neutron diffraction data on single crystals of RbHSeO 4 in the paraelectric phase at 383 K and ferroelectric 293 K, NH HSeO 400 thermal vibration parameters atoms these as well structural changes during transition have been studied. The transitions are due to ordering H-atom arrangement for one hydrogen bonds
Single crystals of Nd 2 CuO 4 , a parent compound for the electron-doped high- T c superconductors, have been studied using X-ray diffraction data collected at 20 K. Structure refinements indicated that specimen was nonstoichiometric, with approximate formula 1.89 3.85 . Difference Fourier maps showed significant residual peaks around Cu and atoms. The density atom had features characteristic valence state +2. Part nonspherical effects observed could be described Gram–Charlier series...
Labuntsovite-Fe, an Fe-dominant member of the labuntsovite subgroup, was first discovered in Khibiny alkaline massif on Mt Kukisvumchorr [Khomyakov et al. (2001). Zap. Vseross. Mineral. Oba, 130 , 36–45]. However, no data are published about crystal structure this mineral. Labuntsovite-Fe from a peralkaline pegmatite located Nyorkpakhk, complex, Kola Peninsula, Russia, has been investigated by means electron microprobe analyses, single-crystal X-ray refinement, and IR Raman spectroscopies....
Crystals - superprotonics are extensively studied with the goal of elucidating influence hydrogen subsystem on physicochemical properties and designing new functional materials. As opposed to other hydrogen-containing compounds, phase transitions in these crystals accompanied by a hydrogen-bond network rearrangement, resulting radical changes their properties, particular, appearance proton conductivity about 10–1 Ω–1 cm–1. These unique class conductors, since superprotonic is related...