Preliminary study on development and characterization of high sensitivity LiAlO2 optically stimulated luminescence material

Lee, J.I.; Pradhan, A.S.; Kim, J.L.; Chang, Insu; Kim, B.H.; Chung, K.S.

doi:10.1016/j.radmeas.2012.01.007

Cited by 30 publications

(8 citation statements)

References 11 publications

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“…The goal of the present work was therefore to study kinetic parameters of both TL and OSL processes of LiAlO 2 using various experimental methods. The investigations were realized with undoped LiAlO 2 samples manufactured at the IFJ Kraków, which main features are very similar to those reported by Lee at al. (2012).…”

Section: Introductionsupporting

confidence: 67%

“…The samples studied in the mentioned publications were prepared with methods of sintering and combustion synthesis, so without full melting of the material and single crystal growth. A big improvement was achieved recently by the group from KAERI (Daejon, Korea), who attempted to grow lithium aluminate single crystals using the Czochralski method and found that undoped lithium aluminate exhibits high OSL sensitivity, significantly exceeding that of Al 2 O 3 :C (Lee et al, 2012). The dose response characteristic was found to be linear in the range from 90 mGy to 2.25 Gy.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of TL and OSL kinetics of lithium aluminate

Twardak

Bilski

Marczewska

et al. 2014

Radiation Measurements

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Lithium aluminate (LiAlO 2 ) polycrystalline material showing high OSL sensitivity and linear dose response was prepared at IFJ Krakow. The kinetic parameters of OSL and TL processes were evaluated using various experimental techniques: LM-OSL deconvolution, TL glow-curve deconvolution, variable heating rate and isothermal decay. The OSL signal was found to consist of four components, one of them exhibiting a very slow decay. The TL glow-curve possesses two apparent peaks at approximately 85 o C and at 165 o C, which both seem to follow first order kinetics. These peaks seem to have a composite structure and as many as six peaks were found in the glowcurve.

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Section: Introductionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Analysis of TL and OSL kinetics of lithium aluminate

Twardak

Bilski

Marczewska

et al. 2014

Radiation Measurements

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“…Lithium aluminates (LiAlO 2 ) are important materials in various health and energy applications. For instance, in dosimetry, γ‐LiAlO 2 is considered as a novel material for optically stimulated luminescence (OSL), offering a superior sensitivity to the conventional carbon‐doped Al 2 O 3 . In batteries, LiAlO 2 nanocrystals and mesoporous materials are critical components in the electrolyte composites .…”

Section: Introductionmentioning

confidence: 99%

Role of interfaces in damage process of irradiated lithium aluminate nanocrystals

Senor

Devanathan

2018

J Am Ceram Soc

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Molecular dynamics simulations were performed to understand the differences in the response of single crystal and nanocrystalline γ‐LiAlO2 to energy deposition by 10 keV Li recoils. The simulations are performed at 573 K and focus on the damage production in the absence of thermal annealing. The grain boundaries in the nanocrystals are found to be amorphous. Analyses of the fate of the beam ions show that the amorphous grain boundaries and differently oriented nanograins increase the number of backscattered ions and decrease the number of transmitted ions. Damaged regions protruding from the grain boundaries provide a direct evidence of the role of the grain boundaries as scattering centers in collision cascades. The simulations show that the defect density produced in the nanocrystals is about twice that in the single crystals. In both samples, Li defects account for 70% of the defects, demonstrating that LiO4 tetrahedra are much more susceptible to damage than AlO4 tetrahedra. Furthermore, Li defects occur preferentially near grain boundaries. Diffusion simulations confirm the limited thermal diffusion of defects at 573 K, effectively separating the damage production from thermal annealing in the irradiation simulations. Nevertheless, the mean square displacements of grain‐boundary defects are found to be larger than lattice defects and surface defects.

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“…For example, high-efficiency green MgAl 11 O 19 : Ce 3+ , Tb 3+ (Jung et al, 2005) and blue BaMgAl 10 O 17 : Eu 2+ (Kim et al, 2002) luminescent powders used Mg(Ba)O-Al 2 O 3 as hosts had widely been applied in the world. Also, there are many reports on the blue-luminescent materials using SrO-Al 2 O 3 system as hosts, including Sr 2 Al 6 O 11 (Takeda et al, 2002), Sr 4 Al 14 O 25 (Garcia et al, 2016), SrAl 2 O 4 (Sohn et al, 2002), and SrAl 4 O 7 (Singh et al, 2016), etc., as well as red-luminescent materials using LiAlO 2 (Lee et al, 2012), LiAl 5 O 8 (Singh and Rao, 2008), and CaAl 12 O 19 (Brik et al, 2011) as hosts. However, many of above materials are prepared by the traditional solid phase calcined method, which has the obvious deficiency of energy consumption because of high synthesis temperature.…”

Section: Introductionmentioning

confidence: 99%

Self-Propagating Combustion Synthesis, Luminescent Properties and Photocatalytic Activities of Pure Ca12Al14O33: Tb3+(Sm3+)

Liu

Yan

2018

Front. Chem.

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The dual-functional Ca12Al14O33: Tb3+ and Ca12Al14O33: Sm3+ materials were prepared by the Self-Propagating Combustion Synthesis (SPCS) technology. The structure, morphology and light absorption property were investigated by XRD, FT-IR, UV-Vis DRS and SEM etc. The doping of Tb3+ and Sm3+ ions had not changed cubic structure of Ca12Al14O33 but leaded to the slight lattice dilatation and the red-shifts of absorption peaks/edges. The excitation and emission spectra indicated that Ca12Al14O33: Tb3+ and Ca12Al14O33: Sm3+ are superior green and red luminescent materials, respectively, and it displayed the distinctly refined structure characteristics which had importantly reference value for the energy level investigation of Tb3+ and Sm3+ ions. Meanwhile, Ca12Al14O33: Tb3+ and Ca12Al14O33: Sm3+ also exhibited the improved photocatalytic degradation for removing dye MB compared with bare Ca12Al14O33.

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Preliminary study on development and characterization of high sensitivity LiAlO2 optically stimulated luminescence material

Cited by 30 publications

References 11 publications

Analysis of TL and OSL kinetics of lithium aluminate

Analysis of TL and OSL kinetics of lithium aluminate

Role of interfaces in damage process of irradiated lithium aluminate nanocrystals

Self-Propagating Combustion Synthesis, Luminescent Properties and Photocatalytic Activities of Pure Ca12Al14O33: Tb3+(Sm3+)

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