Structural optical study of high-dielectric-constant oxide films (Articolo in rivista)

Type
Label
  • Structural optical study of high-dielectric-constant oxide films (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.apsusc.2006.06.004 (literal)
Alternative label
  • Losurdo M, Giangregorio MM, Luchena M, Capezzuto P, Bruno G, Toro RG, Malandrino G, Fragala IL, Lo Nigro R (2006)
    Structural optical study of high-dielectric-constant oxide films
    in Applied surface science; elsevier B.V., Amsterdam (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Losurdo M, Giangregorio MM, Luchena M, Capezzuto P, Bruno G, Toro RG, Malandrino G, Fragala IL, Lo Nigro R (literal)
Pagina inizio
  • 322 (literal)
Pagina fine
  • 327 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 253 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Bari, CNR, IMIP, Dept Chem, I-70126 Bari, Italy; Univ Bari, INSTM, I-70126 Bari, Italy; Univ Catania, Dipartimento Sci Chim, I-95125 Catania, Italy; INSTM, UdR, I-95125 Catania, Italy; CNR, IMM, I-95125 Catania, Italy (literal)
Titolo
  • Structural optical study of high-dielectric-constant oxide films (literal)
Abstract
  • High-k polycrystalline Pr2O3 and amorphous LaAlO3 oxide thin films deposited on Si(0 0 1) are studied. The microstructure is investigated using X-ray diffraction and scanning electron microscopy. Optical properties are determined in the 0.75-6.5 eV photon energy range using spectroscopic ellipsometry. The polycrystalline Pr2O3 films have an optical gap of 3.86 eV and a dielectric constant of 16-26, which increases with film thickness. Similarly, very thin amorphous LaAlO3 films have the optical gap of 5.8 eV, and a dielectric constant below 14 which also increases with film thickness. The lower dielectric constant compared to crystalline material is an intrinsic characteristic of amorphous films. (literal)
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