2011
DOI: 10.1016/j.jallcom.2011.04.135
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Synthesis and optical studies of gamma irradiated Eu doped nanocrystalline CaF2

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Cited by 11 publications
(5 citation statements)
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“…The absorption peaks around 2930 and 2850 cm −1 are caused by organic groups that may be due to the adsorption of oleic acid ester on the surface of fluorite [ 42 ]. The two absorption peaks at 2360 and 2330 cm −1 are caused by the asymmetric stretching vibration of CO 2 [ 4 , 21 ]. The generation of 2360 and 2330 cm −1 may be related to the inclusion of CO 2 in the fluorite or the CO 2 in the air [ 43 , 44 ].…”
Section: Resultsmentioning
confidence: 99%
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“…The absorption peaks around 2930 and 2850 cm −1 are caused by organic groups that may be due to the adsorption of oleic acid ester on the surface of fluorite [ 42 ]. The two absorption peaks at 2360 and 2330 cm −1 are caused by the asymmetric stretching vibration of CO 2 [ 4 , 21 ]. The generation of 2360 and 2330 cm −1 may be related to the inclusion of CO 2 in the fluorite or the CO 2 in the air [ 43 , 44 ].…”
Section: Resultsmentioning
confidence: 99%
“…Table 2 summarizes the possible formation mechanisms of the emission peak. The broad emission centered at 425 nm was caused by the 4 f 7 -4 f 6 5 d 1 transition of Eu 2+ [ 21 , 22 , 23 , 24 , 25 ]. The luminescence center at 452 nm may be caused by 1 D 2 - 3 H 4 of Tm 3+ [ 26 , 27 , 28 , 29 , 30 ].…”
Section: Resultsmentioning
confidence: 99%
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“…However, the TL and PL properties of this nanomaterial have not been well studied. Few studies were focused on the effect of different dopants on its optical properties [34][35][36]. Other investigations were focused on different routes for the syntheses of CaF 2 nanocrystals and study of the upconversion luminescence by doping with some rare earths [37,38].…”
Section: Introductionmentioning
confidence: 99%
“…Salah et al [7] have evaluated Dy doped CaF 2 nanostructure for its TL response to high exposures of gamma rays. Pandurangappa et al [8] synthesized Eu doped CaF 2 nanoparticles by coprecipitation method to study the optical absorption and photoluminescence (PL) properties after gamma rays irradiation. They have added nitric acid (HNO 3 ) in to the mixture and showed particle size of about 25 nm.…”
Section: Introductionmentioning
confidence: 99%