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

نویسندگان

  • J A Sans
  • R Vilaplana
  • D Errandonea
  • V P Cuenca-Gotor
  • B García-Domene
  • C Popescu
  • F J Manjón
  • A Singhal
  • S N Achary
  • D Martinez-Garcia
  • J Pellicer-Porres
  • P Rodríguez-Hernández
  • A Muñoz
چکیده

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.

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عنوان ژورنال:
  • Nanotechnology

دوره 28 20  شماره 

صفحات  -

تاریخ انتشار 2017