Photoluminescence of Cr3+ in nanostructured Al2O3 synthesized by evaporation using a continuous wave CO2 laser. Issue 3 (4th January 2016)

• Record Type: Journal Article
• Authors: Kostyukov, Anton; Baronskiy, Mark; Rastorguev, Alexander; Snytnikov, Valeriy; Snytnikov, Vladimir; Zhuzhgov, Aleksey; Ishchenko, Arcady
• Is Part Of: RSC advances. Volume 6:Issue 3(2016)
• Page Start: 2072
• Page End: 2078
• Publication Date: 2016-01-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra19455e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Photoluminescence of Cr 3+ in nanostructured α-Al2 O3 synthesized by evaporation using a continuous wave CO2 laser. Abstract : Laser evaporation of an Al2 O3 target by a continuous wave CO2 laser was used to obtain nanostructured Al2 O3 condensates with a mean crystallite size of 6 nm, one nominally pure and another doped with chromium at a concentration of 0.2 wt%. Photoluminescence of Cr 3+ was observed in all the samples of the Al2 O3 condensate. In all the Al2 O3 condensates the α-Al2 O3 phase, undetectable by XRD and HRTEM, was revealed by Cr 3+ probing. Photoluminescence studies with the use of Cr 3+ as a probe also revealed the θ- and (γ + δ)-crystal phases of Al2 O3 ; this finding was supported by XRD and HRTEM data.