Search Results - "LEBBOU, K"

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al 2 O 3 -YAG-ZrO 2 eutectic solidified by the micro-pulling down technique by Benamara, O, Lebbou, K

“…Directional solidification experiments have been carried out in eutectic and off eutectic composition in Al O -YAG-ZrO system using the micro-pulling down…”
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Mid-infrared emission properties of the Tm3+-doped sesquioxide crystals Y2O3, Lu2O3, Sc2O3 and mixed compounds (Y,Lu,Sc)2O3 around 1.5-, 2- and 2.3-μm by Moncorgé, R., Guyot, Y., Kränkel, C., Lebbou, K., Yoshikawa, A.

“…Tm3+-doped sesquioxides Y2O3, Lu2O3 and Sc2O3 are well known for their emissions around 2 μm (3F4 →3H6 transition). We study here their absorption and emission…”
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The influence of deposition parameters on the structural quality of PLD-grown GaN/sapphire thin films by Kawwam, M., Lebbou, K.

“…•The evolutions of crystallization and surface morphology of the as-deposited GaN films were studied as a function of process conditions systematic…”
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Structural and vibrational properties of (Gd0.7Lu0.3)3Al5O12 cubic garnet synthesized with different aluminium sources via co-precipitation method by Lanez, I, Rekik, B, Kezzim, A, Derbal, M, Lanez, T, Lebbou, K

“…Gadolinium aluminium garnet (Gd 3 Al 5 O 12 ) nanopowders, with 30 at% lutetium substitution have been successfully synthesized using the co-precipitation…”
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The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al2O3–YAG–ZrO2 eutectic solidified by the micro-pulling down technique by Benamara, O, Lebbou, K

“…Directional solidification experiments have been carried out in eutectic and off eutectic composition in Al2O3–YAG–ZrO2 system using the micro-pulling down…”
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Modeling the effect of crystal and crucible rotation on the interface shape in Czochralski growth of piezoelectric langatate crystals by Stelian, C., Nehari, A., Lasloudji, I., Lebbou, K., Dumortier, M., Cabane, H., Duffar, T.

“…•Growth interface shape in Cz growth of piezoelectric langatate crystals is numerically investigated.•Interface shape is mainly determined by the internal…”
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Optical properties of 2 at %(Ln3+) doped LiGd(WO4)2 with Ln; Eu, Er and Tm, grown by μ-pulling down technique by Rekik, B., Alombert-Goget, G., Berthelot, A., Benamara, O., Lebbou, K.

“…Spectroscopic and luminescent properties of europium (Eu), erbium (Er), thulium (Tm) doped LiGd(WO4)2 fibers crystals, present high performances for…”
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Effects of Codoping With Divalent Cations on Performance of YAG:Ce,C Scintillator by Gerasymov, I., Witkiewicz-Lukaszek, S., Zorenko, T., Bartosiewicz, K., Zorenko, Yu, Winiecki, J., Kofanov, D., Boyaryntseva, Ya, Tkachenko, S., Arhipov, P., Galenin, E., Kurtsev, D., Zelenskaya, O., Alekseev, V., Lebbou, K., Sidletskiy, O.

“…Growth technologies of oxide crystals in W/Mo crucibles have been developed as a low-cost alternative to conventional processes involving Ir crucibles…”
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Impact of growth atmosphere on langatate (La3Ga5.5Ta0·5O14) crystals grown by czochralski technique and its coloration by Boutahraoui, B., Ghezal, E.A., Nehari, A., Zaidat, K., Allani, M., Cabane, H., Dumortier, M., Gerasymov, I., Sidletskiy, O., Obbade, S., Jouffret, L., Lebbou, K.

“…Langatate (LGT) crystals of La3Ga5.5Ta0·5O14 composition of diameter 50 mm were grown from the melt by Czochralski technique. Using (1–2 wt %) Ga2O3 excess in…”
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Mechanisms of luminescence decay in YAG-Ce,Mg fibers excited by γ- and X-rays by Belsky, A., Lebbou, K., Kononets, V., Sidletskiy, O., Gektin, A., Auffray, E., Spassky, D., Vasil'ev, A.N.

“…Time-resolved luminescence of YAG-Ce (150 ppm) fiber crystal with Mg co-doping was studied under pulsed X-ray excitation and γ-rays (Cs 662 keV). The initial…”
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Growth of long undoped and Ce-doped LuAG single crystal fibers for dual readout calorimetry by Kononets, V., Auffray, E., Dujardin, C., Gridin, S., Moretti, F., Patton, G., Pauwels, K., Sidletskiy, O., Xu, X., Lebbou, K.

“…Undoped and Ce3+-doped Lu3Al5O12 (LuAG) fibers were grown to evaluate their potential use in new particle physics experiments, such as dual-readout…”
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Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics by Xu, X., Lebbou, K., Moretti, F., Pauwels, K., Lecoq, P., Auffray, E., Dujardin, C.

“…Under a stationary stable regime undoped and Ce-doped LuAG (Lu3Al5O12) single-crystal fibers were grown by a micro-pulling-down technique. The meniscus length…”
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Chemical Segregation of Titanium in Sapphire Single Crystals Grown by Micro-Pulling-Down Technique: Analytical Model and Experiments by Nehari, A, Duffar, T, Ghezal, E.A, Lebbou, K

“…The micro-pulling-down (μ-PD) process consists in pulling a crystal under a capillary channel placed at the bottom of a crucible. Despite it being limited to…”
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Morphological study of PLD grown CuO films on SrTiO3, sapphire, quartz and MgO substrates by Kawwam, M., Alharbi, F., Aldwayyan, A., Lebbou, K.

“…► Cupric oxide films were prepared on various substrates by the pulsed laser deposition (PLD) technique to investigate their effects on surface morphology. ► A…”
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Observation of Gas Bubble Incorporation during Micropulling-Down Growth of Sapphire by Ghezal, E. A, Nehari, A, Lebbou, K, Duffar, T

“…Quite often sapphire shaped crystals contain specific defects called bubbles of average diameter higher than 100 μm or microbubbles of diameter smaller than 10…”
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Spectroscopic properties of Er3+-doped antimony oxide glass by Ouannes, K., Soltani, M.T., Poulain, M., Boulon, G., Alombert-Goget, G., Guyot, Y., Pillonnet, A., Lebbou, K.

“…•As a function of Er concentration, glasses corresponding to the 60Sb2O3–20WO3–(19−x) Na2O–1Bi2O3, xEr2O3 formula were prepared. The quantum efficiency shows…”
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Laser Operation in a Tm:LuAG Crystal Grown by the Micro-Pulling-Down Technique by Song, Qingsong, Xu, Xiaodong, Zhou, Zhiyong, Xu, Bin, Li, Dongzhen, Liu, Peng, Xu, Jun, Lebbou, K.

“…We report on the growth and laser operation of Tm:Lu 3 Al 5 O 12 (Tm:LuAG) single crystal grown via the micro-pulling-down (<inline-formula> <tex-math…”
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Growth and characterization of Ce-doped YAG and LuAG fibers by Djebli, A., Boudjada, F., Pauwels, K., Kononets, V., Patton, G., Benaglia, A., Lucchini, M., Moretti, F., Sidletskiy, O., Dujardin, C., Lecoq, P., Auffray, E., Lebbou, K.

“…Undoped and Ce-doped Lu3Al5O12 (LuAG) and Y3Al5O12 (YAG) single crystal fibers were grown by the micro-pulling down technique (μ-PD) with a purpose to fit the…”
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Origin of scattering defect observed in large diameter Ti:Al2O3 crystals grown by the Kyropoulos technique by Sen, G., Alombert Goget, G., Nagirnyi, V., Romet, I., Tran Caliste, T.N., Baruchel, J., Muzy, J., Giroud, L., Lebbou, K., Duffar, Th

“…•Explanation for scattering band is proposed.•There are very few dislocations in the scattering band.•This is explained by peculiarities of stress field during…”
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Microstructure of the yttria doped Al2O3–ZrO2 eutectic fibers grown by the laser heated pedestal growth (LHPG) method by Laidoune, A., Lebbou, K., Bahloul, D.

“…In this work we study the influence of the pulling rate, the concentration and the annealing on the microstructure of the yttria doped Al2O3/ZrO2 eutectic…”
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