Attia, Mohammed A. A. and Garroni, Sebastiano and Chiriu, Daniele and Ricci, Carlo and Delogu, Francesco and Orrù, Roberto and Cao, Giacomo (2015) X-ray induced color change on dense yttria samples obtained by sparkplasma sintering. Chemical Physics Letters, Vol. 618 , p. 108-113. ISSN 0009-2614. eISSN 1873-4448. Article.
Full text not available from this repository.
This work focuses on a particular behavior of dense yttria samples fabricated by spark plasma sintering,which display a reddish coloration when subjected to X-ray irradiation. The reddish coloration appearsexclusively in sintered material. Optical measurements, X-ray photoelectron spectroscopy and chem-ical methods have been used to investigate the properties of consolidated yttria. The results obtainedsuggest that the sintered material exhibits a relatively high concentration of oxygen vacancies. Ther-moluminescence measurements indicate that they act as electronic trapping sites. A generalized-orderkinetic analysis suggests that at least five different shallow traps can be identified.
I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore
Repository Staff Only: item control page