6533b7d8fe1ef96bd126b88f

RESEARCH PRODUCT

Structural and Vibrational Properties of Corundum-type In2O3 Nanocrystals under Compression

D. Martinez-garciaB. García-domeneRosario VilaplanaD. ErrandoneaVanesa P. Cuenca-gotorPlácida Rodríguez-hernándezJulio Pellicer-porresJuan Angel SansAnshu SinghalFrancisco Javier ManjónAlfonso MuñozSrungarpu N. AcharyCatalin Popescu

subject

Materials scienceCorundum nanocrystalsThermodynamicsBioengineeringCorundumNanotechnology02 engineering and technologyengineering.material010402 general chemistryEspectroscopia01 natural sciencesIndium oxidesymbols.namesakePhase (matter)NanocristalesGeneral Materials ScienceElectrical and Electronic EngineeringhighpressureMechanical EngineeringDifracción de rayos XGeneral Chemistry021001 nanoscience & nanotechnologyNanocrystalline material0104 chemical sciencesX-ray diffractionNanocrystalMechanics of MaterialsFISICA APLICADAX-ray crystallographyRaman spectroscopysymbolsengineeringOrthorhombic crystal systemAb initio calculations0210 nano-technologyRaman spectroscopyRaman scatteringAlta presión

description

[EN] This work reports the structural and vibrational properties of nanocrystals of corundum-type In2O3 (rh-In2O3) at high pressures by using angle-dispersive x-ray diffraction and Raman scattering measurements up to 30 GPa. The equation of state and the pressure dependence of the Raman-active modes of the corundum phase in nanocrystals are in good agreement with previous studies on bulk material and theoretical simulations on bulk rh-In2O3. Nanocrystalline rh-In2O3 showed stability under compression at least up to 20 GPa, unlike bulk rh-In2O3 which gradually transforms to the orthorhombic Pbca (Rh2O3-III-type) structure above 12 14 GPa. The different stability range found in nanocrystalline and bulk corundum-type In2O3 is discussed.

http://riull.ull.es/xmlui/handle/915/4535