Crystallization of sputtered-deposited and ion implanted amorphous Ge2Sb2Te5 thin films (Articolo in rivista)

Type
Label
  • Crystallization of sputtered-deposited and ion implanted amorphous Ge2Sb2Te5 thin films (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.3148288 (literal)
Alternative label
  • Rimini E.; De Bastiani R.; Carria E.; Grimaldi M.G.; Nicotra G.; Bongiorno C.; Spinella C. (2009)
    Crystallization of sputtered-deposited and ion implanted amorphous Ge2Sb2Te5 thin films
    in Journal of applied physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rimini E.; De Bastiani R.; Carria E.; Grimaldi M.G.; Nicotra G.; Bongiorno C.; Spinella C. (literal)
Pagina inizio
  • 123502 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://jap.aip.org/resource/1/japiau/v105/i12/p123502_s1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 105 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 12 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy 2. IMM, CNR, I-95121 Catania, Italy 3. INFM, CNR, MATIS, I-95123 Catania, Italy (literal)
Titolo
  • Crystallization of sputtered-deposited and ion implanted amorphous Ge2Sb2Te5 thin films (literal)
Abstract
  • X-ray diffraction and transmission electron microscopy have been utilized to measure the ion irradiation-induced modification in amorphous Ge2Sb2Te5 thin films. The isothermal crystallization of sputtered-deposited and Sb+ ion irradiated amorphous samples has been studied, focusing on the evolution of the microstructure during the initial stage of the transformation. In both samples, the amorphous to crystal transition occurs through the nucleation of face centered cubic (fcc) crystal domains at the film surface. A fast bidimensional growth of the crystalline nuclei in the sputtered-deposited films occurs by the generation of transrotational grains. The lattice parameter decreases as the crystalline fraction increases above 80%, and it approaches the fcc bulk value at the end of the transformation. Ion irradiation produces a densification of the deposited amorphous film (similar to 4% vertical shrinkage measured by atomic force microscopy) and an enhancement of the crystallization rate. Even in the irradiated amorphous, the nucleation occurs at the film surface and proceeds by the growth of the grains through the thickness of the layer although the density of the transrotational grains is strongly reduced with respect to the unirradiated amorphous. A link between the ion beam induced densification and the reduction of transrotational grains is proposed. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it