Proton presence and motion in rhenium-oxide films and their application to liquid-crystalline cells (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Proton presence and motion in rhenium-oxide films and their application to liquid-crystalline cells (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Castriota, M; Cazzanelli, E; Das, G; Kalendarev, R; Kuzmin, A; Marino, S; Mariotto, G; Purans, J; Scaramuzza, N (2007)
  Proton presence and motion in rhenium-oxide films and their application to liquid-crystalline cells
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Castriota, M; Cazzanelli, E; Das, G; Kalendarev, R; Kuzmin, A; Marino, S; Mariotto, G; Purans, J; Scaramuzza, N (literal)

Pagina inizio

• 1 (literal)

Pagina fine

• 15 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 474 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Calabria, Ctr Eccellenza Mat Innovat Funzloni Calabria, Ist Nazl Fis Della Mat Liquid Crystal Lab, Dept Phys, I-87036 Arcavacata Di Rende, Italy; Univ Trent, Dept Phys, Peterborough, ON K9J 7B8, Canada; Latvian State Univ, Inst Solid State Phys, Riga, Latvia (literal)

Titolo

• Proton presence and motion in rhenium-oxide films and their application to liquid-crystalline cells (literal)

Abstract

• Disordered solid phases, containing appreciable amounts of hydrogen ions, are grown at the surface of rhenium oxide crystals, because of the high reactivity of this compound with ambient moisture. To investigate such phenomena, a comparative study is performed on ground powder and thermally evaporated or sputtered films using x-ray diffraction and micro-Raman spectroscopy. Two types of solid phases were found in the films: HxReO3 distorted perovskite structures, based on corner-sharing ReO6 octahedra as in the bulk crystals, and ordered HReO4 crystalline structures, based on tetrahedral perrhenate ions. The complex impedance measurements on ReO3 films support the hypothesis of mobile hydrogen ions in such defective films. Moreover, this relevant protonic conductivity allows the application of these films as active layers inserted into asymmetric nematic liquid-crystalline cells to rectify the electro-optical response of such devices, with performances quite similar to previously studied oxides such as WO3. (literal)

Prodotto di

• Soft Matter e nanotecnologie per elettro-ottica e di interesse biomedico e applicazioni tecnologiche correlate (MD.P01.016.001) (Modulo)

Autore CNR

• NICOLA SCARAMUZZA (Unità di personale esterno)
• MARCO CASTRIOTA (Unità di personale esterno)
• ENZO CAZZANELLI (Persona)

Insieme di parole chiave

• Keywords of "Proton presence and motion in rhenium-oxide films and their application to liquid-crystalline cells" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• MARCO CASTRIOTA (Unità di personale esterno)
• NICOLA SCARAMUZZA (Unità di personale esterno)
• ENZO CAZZANELLI (Persona)

Prodotto

• Soft Matter e nanotecnologie per elettro-ottica e di interesse biomedico e applicazioni tecnologiche correlate (MD.P01.016.001) (Modulo)

Insieme di parole chiave di

• Keywords of "Proton presence and motion in rhenium-oxide films and their application to liquid-crystalline cells" (Insieme di parole chiave)