0000000000067184

AUTHOR

Roman Chernikov

showing 3 related works from this author

Low temperature X-ray absorption spectroscopy study of $CuMoO_{4}$ and $CuMo_{0.90}W_{0.10}O_4$ using reverse Monte-Carlo method

2020

Radiation physics and chemistry 175, 108411 (2020). doi:10.1016/j.radphyschem.2019.108411

Phase transitionX-ray absorption spectroscopyRadiationMaterials scienceAbsorption spectroscopyExtended X-ray absorption fine structureCuMoO4010308 nuclear & particles physicsX-ray absorption spectroscopyReverse Monte CarloAtmospheric temperature range01 natural sciencesMolecular physics530XANESXANES030218 nuclear medicine & medical imaging03 medical and health sciencesEXAFS0302 clinical medicine0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]ddc:530Reverse Monte CarloAbsorption (electromagnetic radiation)
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Probing the Thermochromic Phase Transition in CuMoO 4 by EXAFS Spectroscopy

2018

The work was supported by philanthropist MikroTik and administrated by the University of Latvia Foundation. The experiment at HASYLAB/DESY was performed within the project I-20160149 EC.

Phase transitionThermochromismExafs spectroscopyMaterials scienceExtended X-ray absorption fine structureCuMoO4Mo K-edge02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciences3. Good health0104 chemical sciencesElectronic Optical and Magnetic MaterialsEXAFSphase transition:NATURAL SCIENCES:Physics [Research Subject Categories]Physical chemistry0210 nano-technologyphysica status solidi (b)
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X-ray absorption near edge spectroscopy of thermochromic phase transition in CuMoO4

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 intensity at the Mo K-edge, indicating that the transition from brown-ish-red γ-CuMoO4 to green α-CuMoO4 occurs in the temperature range of 230-280 K upon heating, whereas the α-to-γ transition occurs between 200 and 120 K upon cooling. Such behavior of the pre-edge shoulder at the Mo K-edge correlates with the change of molybdenum coordination between distorted tetrahedral in α-CuMoO4 and distorted octahedral in γ-CuMoO4. This result has been s…

Phase transitionMaterials sciencePhysics and Astronomy (miscellaneous)Absorption spectroscopyAb initioAnalytical chemistryGeneral Physics and Astronomychemistry.chemical_element02 engineering and technology010402 general chemistry01 natural sciences:NATURAL SCIENCES:Physics [Research Subject Categories]ddc:530Absorption (electromagnetic radiation)SpectroscopyCuMoO4X-ray absorption spectroscopyAtmospheric temperature range021001 nanoscience & nanotechnologyXANES3. Good health0104 chemical scienceschemistryMolybdenumphase transitionthermochromism0210 nano-technology
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