6533b821fe1ef96bd127b7d4
RESEARCH PRODUCT
Orthorhombic boron oxide under pressure: in situ study by X-ray diffraction and Raman scattering
Yann Le GodecKirill A. CherednichenkoKirill A. CherednichenkoAleksandr KalinkoAleksandr KalinkoMohamed MezouarVladimir L. Solozhenkosubject
Materials scienceAnalytical chemistryGeneral Physics and Astronomychemistry.chemical_elementInfrared spectroscopyFOS: Physical sciences02 engineering and technology01 natural sciencessymbols.namesakeCondensed Matter::Materials ScienceCondensed Matter::Superconductivity0103 physical sciencesPhysics::Atomic PhysicsBoron010302 applied physicsBulk modulusCondensed Matter - Materials ScienceMaterials Science (cond-mat.mtrl-sci)021001 nanoscience & nanotechnologychemistryBoron oxideX-ray crystallographysymbolsOrthorhombic crystal system0210 nano-technologyRaman spectroscopyRaman scatteringdescription
High-pressure phase of boron oxide, orthorhombic \b{eta}-B2O3, has been studied in situ by synchrotron X-ray diffraction to 22 GPa and Raman scattering to 46 GPa at room temperature. The bulk modulus of \b{eta}-B2O3 has been found to be 169(3) GPa that is in good agreement with our ab initio calculations. Raman and IR spectra of \b{eta}-B2O3 have been measured at ambient pressure, all experimentally observed bands have been attributed to the theoretically calculated ones, and the mode assignment has been performed. Based on the data on Raman shift as a function of pressure, combined with equation-of-state data, the Gr\"uneisen parameters of all experimentally observed Raman bands have been calculated. \b{eta}-B2O3 enriched by 10B isotope has been synthesized, and the effect of boron isotopic substitution on Raman spectra has been studied.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-11-07 |