Structural and electrical properties of Er-doped HfO(2) and of its interface with Ge (001) (Articolo in rivista)

Type
Label
  • Structural and electrical properties of Er-doped HfO(2) and of its interface with Ge (001) (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Wiemer C, Baldovino S, Lamagna L, Perego M, Schamm-Chardon S, Fanciulli M (2011)
    Structural and electrical properties of Er-doped HfO(2) and of its interface with Ge (001)
    in Microelectronic engineering
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Wiemer C, Baldovino S, Lamagna L, Perego M, Schamm-Chardon S, Fanciulli M (literal)
Pagina inizio
  • 415 (literal)
Pagina fine
  • 418 (literal)
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  • 88 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. IMM CNR, Lab MDM, I-20864 Agrate Brianza, MB, Italy 2. Univ Milano Bicocca, Dipartimento Sci Mat, Milan, Italy 3. CNRS, CEMES, F-31055 Toulouse 4, France 4. Univ Toulouse, NMat Grp, F-31055 Toulouse 4, France (literal)
Titolo
  • Structural and electrical properties of Er-doped HfO(2) and of its interface with Ge (001) (literal)
Abstract
  • Er-doped HfO(2) thin films with Er content ranging from 0% to 15% are deposited by atomic layer deposition on native oxide free Ge(001). The crystallographic phase is investigated by X-ray diffraction and is found to depend on the Er%. The cubic fluorite structure develops on Ge for Er% as low as 4% and is stable after annealing at 400 degrees C in N(2). Microstrain increases with increasing the Er content within the fluorite structure. Time of flight secondary ion mass and electron energy loss spectroscopy evidence a Ge diffusion from the substrate that results in the formation of a Ge-rich interfacial region which does not present a structural discontinuity with the oxide. The diffusion of Ge is enhanced by the annealing and causes a reordering of the crystal lattice. In annealed films the interface defect density measured by low temperature conductance measurements is found to decrease with decreasing the Er content. (literal)
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