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Pressure-induced structural changes in α-MoO3 probed by X-ray absorption spectroscopy
(Institute of Physics Publishing, 2019)
Energy-dispersive X-ray absorption spectroscopy at the Mo K-edge was used to study pressure-induced (up to 36 GPa) changes in the local atomic structure of 2D layered oxide α-MoO3. A linear combination analysis based on the low and high-pressure X...
X-ray absorption near edge spectroscopy of thermochromic phase transition in CuMoO4
(Institute for Low Temperature Physics and Engineering, 2018)
Thermochromic phase transition was studied in CuMoO4 using the Cu and Mo K-edge x-ray absorption spec-troscopy in the temperature range of 10-300 K. The hysteretic behavior has been evidenced from the tempera-ture dependence of the pre-edge shoulder...
Octahedral Tilting in Homologous Perovskite Series CaMoO3-SrMoO3-BaMoO3 Probed by Temperature-Dependent EXAFS Spectroscopy
(MDPI, 2022)
) to perform polyhedral analysis. The obtained results demonstrate the strong sensitivity of the EXAFS spectra to the tilting of [MoO6] octahedra induced by the differences in the sizes of alkaline earth metal cations (Ca2+, Sr2+, and Ba2+)....
Probing the Thermochromic Phase Transition in CuMoO4 by EXAFS Spectroscopy
(Wiley-VCH Verlag, 2018)
Extended X-ray absorption fine structure (EXAFS) spectroscopy at the Mo K-edge is used to follow the thermochromic γ-to-α phase transition in copper molybdate (CuMoO4). The temperature dependence (10–300 K) of the radial distribution function (RDF...
Low temperature X-ray absorption spectroscopy study of CuMoO4 and CuMo0.90W0.10O4 using reverse Monte-Carlo method
(Elsevier Ltd, 2019)
Reversible thermochromic phase transition between α- and γ-phases was studied in CuMoO4 and CuMo0.90W0.10O4 using X-ray absorption spectroscopy in the temperature range of 10–300 K. Reverse Monte Carlo modelling with evolutionary algorithm approach...
Impact of the local structure on the thermochromic properties of copper molybdate and its solid solutions
(Latvijas Universitāte, 2022)
Materiālu funkcionālās īpašības ir cieši saistītas ar to struktūru un ķīmisko sastāvu. Darbā tiek pētīta saikne starp vara molibdāta (CuMoO4) un tā cieto šķīdumu ar volframu un cinku (CuMo1-xWxO4 un Cu1-xZnxMoO4) lokālo atomāro struktūru un...
The functional properties of materials are closely related to their structure and composition. In this thesis, the relationship between the local atomic structure and thermochromic properties of copper molybdate (CuMoO4) and its solid solutions with tungsten and zinc (CuMo1-xWxO4 and Cu1-xZnxMoO4) is studied using X-ray absorption and resonant X-ray emission spectroscopy (XAS and RXES). Experimental data are interpreted based on reverse Monte Carlo modeling and theoretical calculations. The study demonstrates the possibilities of the XAS and RXES methods to probe the local structure changes in materials with low symmetry, as well as explains the relationship between the local structure distortions and lattice dynamics of the considered materials and their thermochromic properties. Keywords: CuMoO4, X-ray absorption spectroscopy, EXAFS, XANES, reverse Monte Carlo method...
The functional properties of materials are closely related to their structure and composition. In this thesis, the relationship between the local atomic structure and thermochromic properties of copper molybdate (CuMoO4) and its solid solutions with tungsten and zinc (CuMo1-xWxO4 and Cu1-xZnxMoO4) is studied using X-ray absorption and resonant X-ray emission spectroscopy (XAS and RXES). Experimental data are interpreted based on reverse Monte Carlo modeling and theoretical calculations. The study demonstrates the possibilities of the XAS and RXES methods to probe the local structure changes in materials with low symmetry, as well as explains the relationship between the local structure distortions and lattice dynamics of the considered materials and their thermochromic properties. Keywords: CuMoO4, X-ray absorption spectroscopy, EXAFS, XANES, reverse Monte Carlo method...
Synthesis and characterization of ZnO/ZnS/MoS2 core-shell nanowires
(Elsevier B.V., 2017)
Hybrid nanostructures composed of layered materials have recently attracted a lot of attention due to their promising electronic and catalytic properties. In this study, we describe a novel synthesis strategy of ZnO/ZnS/MoS2 core-shell nanowire...
The influence of Zn2+ ions on the local structure and thermochromic properties of Cu1-xZnxMoO4 solid solutions
(Elsevier, 2021)
The influence of zinc ions on the thermochromic properties of polycrystalline CuZnMoO (=0.10, 0.50, 0.90) solid solutions was studied by X-ray absorption spectroscopy at the Cu, Zn and Mo K-edges. Detailed structural information on the local...
Unraveling the interlayer and intralayer coupling in two-dimensional layered MoS2 by X-ray absorption spectroscopy and ab initio molecular dynamics simulations
(Elsevier, 2023)
Monte Carlo (RMC) and ab initio molecular dynamics (AIMD) simulations can provide useful information on both interlayer and intralayer coupling in 2DLM 2H-MoS. The analysis of the low-temperature (10–300 K) Mo K-edge extended X-ray absorption fine...
Luminescence properties and time-resolved spectroscopy of rare-earth doped SrMoO4 single crystals
(Elsevier, 2022)
Luminescence properties of nominally pure and doped with Eu3+ and Pr3+ ions SrMoO4 single crystals grown by the Czochralski method have been studied. Thermal quenching of intrinsic emission of pure and doped SrMoO4 single crystals has been observed...