Structural and vibrational properties of corundum-type In2O3 nanocrystals under compression

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 t...

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Veröffentlicht in:	Nanotechnology 2017-05, Vol.28 (20), p.205701-205701
Hauptverfasser:	Sans, J A, Vilaplana, R, Errandonea, D, Cuenca-Gotor, V P, García-Domene, B, Popescu, C, Manjón, F J, Singhal, A, Achary, S N, Martinez-Garcia, D, Pellicer-Porres, J, Rodríguez-Hernández, P, Muñoz, A
Format:	Artikel
Sprache:	eng
Schlagworte:	calculations corundum high-pressure indium oxide nanocrystals Raman spectroscopy x-ray diffraction
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Beschreibung
Zusammenfassung:	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.
ISSN:	0957-4484 1361-6528
DOI:	10.1088/1361-6528/aa6a3f