The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
C. D. Kim - One of the best experts on this subject based on the ideXlab platform.
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tunable color emission and solid Solubility Limit in ba1 xcaxal2o4 eu0 0012 phosphors through the mixed states of caal2o4 and baal2o4
Materials Research Bulletin, 2000Co-Authors: J.c. Choi, T. W. Kim, H. L. Park, C. D. KimAbstract:Abstract The tunable color emission and solid Solubility Limit in Ba1−xCaxAl2O4:Eu0.0012+ phosphors was investigated by using cathodoluminescence (CL) and X-ray diffraction (XRD) measurements. The CL spectra showed that the tuning range of the color emission was between 500 and 430 nm. The XRD curves showed that the lattice constant of the (102) plane in the Ba0.6Ca0.4Al2O4:Eu0.0012+ phosphor had a minimum value, and that the single phase Limit in the Ba1−xCaxAl2O4:Eu0.0012+ phosphors is below x value of 0.4.
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Tunable color emission and solid Solubility Limit in Ba1−xCaxAl2O4:Eu0.0012+ phosphors through the mixed states of CaAl2O4 and BaAl2O4
Materials Research Bulletin, 2000Co-Authors: J.c. Choi, Hyung-sik Park, T. W. Kim, C. D. KimAbstract:Abstract The tunable color emission and solid Solubility Limit in Ba1−xCaxAl2O4:Eu0.0012+ phosphors was investigated by using cathodoluminescence (CL) and X-ray diffraction (XRD) measurements. The CL spectra showed that the tuning range of the color emission was between 500 and 430 nm. The XRD curves showed that the lattice constant of the (102) plane in the Ba0.6Ca0.4Al2O4:Eu0.0012+ phosphor had a minimum value, and that the single phase Limit in the Ba1−xCaxAl2O4:Eu0.0012+ phosphors is below x value of 0.4.
Shlomit Zamir - One of the best experts on this subject based on the ideXlab platform.
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Solubility Limit of Si in YAG at 1700°C in vacuum
Journal of the European Ceramic Society, 2017Co-Authors: Shlomit ZamirAbstract:Abstract Measurement of the Solubility Limit of Si in yttrium aluminum garnet (YAG-Y3Al5O12) is crucial for understanding the mechanisms by which Si influences grain boundary mobility, and the mechanisms by which grain boundaries migrate. In the present work, the Solubility Limit of Si in YAG at 1700 °C in vacuum (5 × 10−6 Torr), which are the most common sintering temperature and environment for YAG, was measured for the first time. Measurements were conducted by wavelength dispersive spectroscopy (WDS), using polished YAG specimens with 3700 ppm Si (0.8 wt% SiO2). Si content to ensure saturation with Si. The accuracy of the WDS result was confirmed by using a series of doped specimens and by comparing to inductively coupled plasma mass spectrometry ICP-MS results. The results indicate that the Solubility Limit of Si in YAG at 1700 °C (5 × 10−6 Torr), is 980 ± 60 ppm. The measured Si Solubility was found to significantly depend on the cooling rate, where for furnace cooled specimens the measured Si Solubility was 650 ± 60 ppm. A second phase in triple junction was repeatedly observed when higher content of Si was used, confirming this work results.
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Solubility Limit of si in yag at 1700 c in vacuum
Journal of The European Ceramic Society, 2017Co-Authors: Shlomit ZamirAbstract:Abstract Measurement of the Solubility Limit of Si in yttrium aluminum garnet (YAG-Y3Al5O12) is crucial for understanding the mechanisms by which Si influences grain boundary mobility, and the mechanisms by which grain boundaries migrate. In the present work, the Solubility Limit of Si in YAG at 1700 °C in vacuum (5 × 10−6 Torr), which are the most common sintering temperature and environment for YAG, was measured for the first time. Measurements were conducted by wavelength dispersive spectroscopy (WDS), using polished YAG specimens with 3700 ppm Si (0.8 wt% SiO2). Si content to ensure saturation with Si. The accuracy of the WDS result was confirmed by using a series of doped specimens and by comparing to inductively coupled plasma mass spectrometry ICP-MS results. The results indicate that the Solubility Limit of Si in YAG at 1700 °C (5 × 10−6 Torr), is 980 ± 60 ppm. The measured Si Solubility was found to significantly depend on the cooling rate, where for furnace cooled specimens the measured Si Solubility was 650 ± 60 ppm. A second phase in triple junction was repeatedly observed when higher content of Si was used, confirming this work results.
J.c. Choi - One of the best experts on this subject based on the ideXlab platform.
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tunable color emission and solid Solubility Limit in ba1 xcaxal2o4 eu0 0012 phosphors through the mixed states of caal2o4 and baal2o4
Materials Research Bulletin, 2000Co-Authors: J.c. Choi, T. W. Kim, H. L. Park, C. D. KimAbstract:Abstract The tunable color emission and solid Solubility Limit in Ba1−xCaxAl2O4:Eu0.0012+ phosphors was investigated by using cathodoluminescence (CL) and X-ray diffraction (XRD) measurements. The CL spectra showed that the tuning range of the color emission was between 500 and 430 nm. The XRD curves showed that the lattice constant of the (102) plane in the Ba0.6Ca0.4Al2O4:Eu0.0012+ phosphor had a minimum value, and that the single phase Limit in the Ba1−xCaxAl2O4:Eu0.0012+ phosphors is below x value of 0.4.
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Tunable color emission and solid Solubility Limit in Ba1−xCaxAl2O4:Eu0.0012+ phosphors through the mixed states of CaAl2O4 and BaAl2O4
Materials Research Bulletin, 2000Co-Authors: J.c. Choi, Hyung-sik Park, T. W. Kim, C. D. KimAbstract:Abstract The tunable color emission and solid Solubility Limit in Ba1−xCaxAl2O4:Eu0.0012+ phosphors was investigated by using cathodoluminescence (CL) and X-ray diffraction (XRD) measurements. The CL spectra showed that the tuning range of the color emission was between 500 and 430 nm. The XRD curves showed that the lattice constant of the (102) plane in the Ba0.6Ca0.4Al2O4:Eu0.0012+ phosphor had a minimum value, and that the single phase Limit in the Ba1−xCaxAl2O4:Eu0.0012+ phosphors is below x value of 0.4.
Ellen Wachtel - One of the best experts on this subject based on the ideXlab platform.
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In vitro determination of the Solubility Limit of cholesterol in phospholipid bilayers
Chemistry and physics of lipids, 2016Co-Authors: Richard M Epand, D Bach, Ellen WachtelAbstract:Cholesterol has Limited Solubility in phospholipid bilayers. The Solubility Limit is strongly dependent on the nature of the lipid with which the cholesterol is mixed while properties of the crystals formed can be modified by phospholipid-cholesterol interactions. In this review we summarize the various methods that have been developed to prepare hydrated mixtures of cholesterol and phospholipid. We point out some of the factors that determine the form adopted when cholesterol crystallizes in such mixtures, i.e. two- or three-dimensional, monohydrate or anhydrous. These differences can greatly affect the ability to experimentally detect the presence of these crystals in a membrane. Several methods for detecting cholesterol crystals are discussed and compared including DSC, X-ray and GIXRD diffraction methods, NMR and EPR spectroscopy. The importance of the history of the sample in determining the amount and nature of the cholesterol crystals formed is emphasized.
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Comment on “Cholesterol Solubility Limit in lipid membranes probed by small angle neutron scattering and MD simulations” by S. Garg et al., Soft Matter, 2014, 10, 9313
Soft matter, 2015Co-Authors: Richard M Epand, D Bach, Ellen WachtelAbstract:In a recent article, Garg et al. used neutron scattering techniques to determine the Limiting amount of cholesterol which vesicles of either POPS or POPC can accommodate. This amount was called “the cholesterol Solubility Limit”. In light of extensive literature on cholesterol phase separation in phospholipid bilayers, the way in which “Solubility Limit” is defined in this article and the conclusions derived are misleading and require some clarification.
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comment on cholesterol Solubility Limit in lipid membranes probed by small angle neutron scattering and md simulations by s garg et al soft matter 2014 10 9313
Soft Matter, 2015Co-Authors: Richard M Epand, D Bach, Ellen WachtelAbstract:In a recent article, Garg et al. used neutron scattering techniques to determine the Limiting amount of cholesterol which vesicles of either POPS or POPC can accommodate. This amount was called “the cholesterol Solubility Limit”. In light of extensive literature on cholesterol phase separation in phospholipid bilayers, the way in which “Solubility Limit” is defined in this article and the conclusions derived are misleading and require some clarification.
Xusheng Wang - One of the best experts on this subject based on the ideXlab platform.
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dielectric nonlinear properties of batio3 catio3 srtio3 ceramics near the Solubility Limit
Materials Chemistry and Physics, 2008Co-Authors: Xusheng Wang, Lingling Zhang, Hong Liu, Jiwei Zhai, Xi YaoAbstract:Abstract Ba 1− x − y Sr y Ca x TiO 3 ( x = 0.2–0.5, and y = 0, 0.05 and 0.1) ceramics were prepared by conventional ceramic method at 1400 °C, and their structural and dielectric properties were characterized near the Solubility Limit. It was found that the Solubility Limit lay around x = 0.24 for Ba 1− x Ca x TiO 3 series, x = 0.30 for Ba 0.95− x Sr 0.05 Ca x TiO 3 series, and x = 0.34 for Ba 0.9− x Sr 0.1 Ca x TiO 3 series, respectively. The dielectric constant increased obviously near the Solubility Limit. Appropriate tunability values ( n r = 0.22–0.38) were obtained in the Ba 0.95− x Sr 0.05 Ca x TiO 3 and Ba 0.9− x Sr 0.1 Ca x TiO 3 samples near the Solubility Limit and in the insoluble area, though the samples contained large fraction of non-ferroelectric phase.
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Dielectric nonlinear properties of BaTiO3–CaTiO3–SrTiO3 ceramics near the Solubility Limit
Materials Chemistry and Physics, 2008Co-Authors: Xusheng Wang, Lingling Zhang, Hong Liu, Jiwei Zhai, Xi YaoAbstract:Abstract Ba 1− x − y Sr y Ca x TiO 3 ( x = 0.2–0.5, and y = 0, 0.05 and 0.1) ceramics were prepared by conventional ceramic method at 1400 °C, and their structural and dielectric properties were characterized near the Solubility Limit. It was found that the Solubility Limit lay around x = 0.24 for Ba 1− x Ca x TiO 3 series, x = 0.30 for Ba 0.95− x Sr 0.05 Ca x TiO 3 series, and x = 0.34 for Ba 0.9− x Sr 0.1 Ca x TiO 3 series, respectively. The dielectric constant increased obviously near the Solubility Limit. Appropriate tunability values ( n r = 0.22–0.38) were obtained in the Ba 0.95− x Sr 0.05 Ca x TiO 3 and Ba 0.9− x Sr 0.1 Ca x TiO 3 samples near the Solubility Limit and in the insoluble area, though the samples contained large fraction of non-ferroelectric phase.
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Large electrostriction near the Solubility Limit in BaTiO3–CaTiO3 ceramics
Applied Physics Letters, 2005Co-Authors: Xusheng Wang, Hiroshi YamadaAbstract:This study prepared (1−x)BaTiO3–xCaTiO3 (x=0.20–1.0) ceramics. Their structural and electric properties were analyzed. High electrostrictive strain of 0.22%, higher by 157% as compared to BaTiO3 ceramic, was obtained near the Solubility Limit in the side of composite (x=0.23), which is a diphasic ceramic composed of a ferroelectric tetragonal Ba0.8Ca0.2TiO3 solid solution and a normal dielectric orthorhombic Ba0.07Ca0.93TiO3 solid solution. This enhanced electrostriction resulted from the coupling of the large ionic polarization in Ba0.07Ca0.93TiO3 with the non-180° domains in Ba0.8Ca0.2TiO3 during the external electric field exertion.
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large electrostriction near the Solubility Limit in batio3 catio3 ceramics
Applied Physics Letters, 2005Co-Authors: Xusheng Wang, Hiroshi YamadaAbstract:This study prepared (1−x)BaTiO3–xCaTiO3 (x=0.20–1.0) ceramics. Their structural and electric properties were analyzed. High electrostrictive strain of 0.22%, higher by 157% as compared to BaTiO3 ceramic, was obtained near the Solubility Limit in the side of composite (x=0.23), which is a diphasic ceramic composed of a ferroelectric tetragonal Ba0.8Ca0.2TiO3 solid solution and a normal dielectric orthorhombic Ba0.07Ca0.93TiO3 solid solution. This enhanced electrostriction resulted from the coupling of the large ionic polarization in Ba0.07Ca0.93TiO3 with the non-180° domains in Ba0.8Ca0.2TiO3 during the external electric field exertion.
