Search results for "Raman mapping"

showing 2 items of 2 documents

Raman Mapping Applied to Reveal Internal Structures of Natural Minerals

2003

Materials scienceMineralogyRaman mappingNatural mineralInstrumentationMicroscopy and Microanalysis
researchProduct

A Raman spectroscopy study of the oxidation processes in synthetic chromite FeCr2O4

2020

Abstract A crystal of synthetic chromite FeCr2O4 has been annealed in air at 700 °C for 50 days at room pressure in order to study physical-chemical changes. After the annealing treatment, Scanning Electron Microscopy (SEM) images of the polished surface of the sample showed areas of different composition. Detailed Raman mapping revealed that the annealed chromite undergoes an oxidation process, proceeding inwards from the outer surface and leading to the transformation of chromite to magnetite, and ultimately to hematite. The oxidation process also leads to the formation of trellis-like lines, arguably via stress-related mechanisms associated with the phase transformation and consequent vo…

Materials scienceRaman mappingAnnealing (metallurgy)Scanning electron microscopeSpinelHematite02 engineering and technologyRaman mapping01 natural sciencesMagnetitechemistry.chemical_compoundsymbols.namesake0103 physical sciencesOxidationMaterials ChemistryMagnetite010302 applied physicsProcess Chemistry and TechnologyChromiteHematite021001 nanoscience & nanotechnologySpinel; Chromite; Magnetite; Hematite; Oxidation; Raman mappingSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialschemistryChemical engineeringvisual_artCeramics and Compositessymbolsvisual_art.visual_art_mediumChromiteOxidation process0210 nano-technologyRaman spectroscopy
researchProduct