2016
DOI: 10.1088/2050-6120/4/3/034011
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Luminescence study of nanosized Al2O3:Tb3+obtained by gas-dispersed synthesis

Abstract: Terbium-doped AlO samples were obtained by gas-dispersed synthesis. It was shown that the resulting powders, with particle sizes of 10-70 nm, consist of a mixture of transition aluminas, among which the δ -polymorph is dominant. The luminescence properties of AlO:Tb have been studied upon excitation in the UV-visible range of the spectrum. It was found that Tb ions cause several groups of inhomogeneously broadened emission bands in the range of 470-640 nm, which are characteristic for disordered materials. In … Show more

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Cited by 7 publications
(4 citation statements)
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“…A powder sample of Mn-doped Al2O3 with particles sizes of 10-70 nm was prepared by a gasdispersed synthesis (GDS). This method is based on the combustion of powdered metals due to exothermic oxidizing reactions between them and a gaseous oxidizer (typically O2) [13], and it is shown to provide favorable morphology of Al2O3 particles and good dispersibility of the final product in various media [13][14][15]. The details of experimental apparatus used for the GDS of nanosized Mn-doped Al2O3 were described previously [13].…”
Section: Methodsmentioning
confidence: 99%
“…A powder sample of Mn-doped Al2O3 with particles sizes of 10-70 nm was prepared by a gasdispersed synthesis (GDS). This method is based on the combustion of powdered metals due to exothermic oxidizing reactions between them and a gaseous oxidizer (typically O2) [13], and it is shown to provide favorable morphology of Al2O3 particles and good dispersibility of the final product in various media [13][14][15]. The details of experimental apparatus used for the GDS of nanosized Mn-doped Al2O3 were described previously [13].…”
Section: Methodsmentioning
confidence: 99%
“…Раніше було показано, що крива диференційної термічної аналізи (ДTA) вихідного номінально чистого Al 2 O 3 демонструє сильний екзотермічний ефект у діяпазоні 1130-1400С з максимумом при 1296С, який відповідає переходу метастабільної модифікації оксиду алюмінію () до -модифікації [10]. Це фазове перетворення добре вивчено, і на даний час відомо, що -Al 2 O 3 формується в процесі зародкоутворення та росту кристалітів.…”
Section: результати і обговоренняunclassified
“…Це фазове перетворення добре вивчено, і на даний час відомо, що -Al 2 O 3 формується в процесі зародкоутворення та росту кристалітів. Ó повній відповідності з даними ДТÀ [10] [11,12].…”
Section: результати і обговоренняunclassified
“…An attempt of further optimization of the synthesis and coating of the CdSe nanoclusters is reported by Lysova et al [42]. Using a gas-dispersed method Berezovskaya et al have synthesized the terbium-doped Al 2 O 3 nanoparticles and investigated their structure and luminescent properties [43].…”
mentioning
confidence: 99%