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RESEARCH PRODUCT

Structural and vibrational behavior of cubic Cu1.80(3)Se cuprous selenide, berzelianite, under compression

ÁNgel Morales-garcíaCatalin PopescuRaquel Chuliá-jordánD. Martinez-garciaA. L. J. PereiraA. L. J. PereiraJuan Angel SansB. García-domeneMartin JansenDavid Santamaría-pérezRosario VilaplanaC. MuehleFrancisco Javier Manjón

subject

DiffractionPhase transitionMaterials scienceHigh-pressureBerzelianiteAnalytical chemistry02 engineering and technologyCrystal structure010402 general chemistry01 natural scienceslaw.inventionchemistry.chemical_compoundsymbols.namesakelawSelenideMaterials ChemistryCompressibilityMechanical EngineeringCrystal structureMetals and Alloys021001 nanoscience & nanotechnologySynchrotron0104 chemical scienceschemistryMechanics of MaterialsPhase transitionsFISICA APLICADAsymbolsOrthorhombic crystal system0210 nano-technologyRaman spectroscopyMonoclinic crystal systemCopper selenide

description

[EN] We have performed an experimental study of the crystal structure and lattice dynamics of cubic Cu1.80(3)Se at ambient temperature and high pressures. Two reversible phase transitions were found at 2.9 and 8.7 GPa. The indexation of the angle-dispersive synchrotron x-ray diffraction patterns suggests a large orthorhombic cell and a monoclinic cell for the high-pressure phases. Raman measurements provide additional information on the local structure. The compressibility of the three ambient temperature phases has been determined and compared to that of other sulphides and selenides.

yearjournalcountryeditionlanguage
2020-07-25
10.1016/j.jallcom.2020.154646https://hdl.handle.net/10251/181804