Contribution of neodymium optical spectroscopy to the crystal growth study of a silicate apatite in a glassy matrix

2008 ◽  
Vol 30 (11) ◽  
pp. 1694-1698 ◽  
Author(s):  
D. de Ligny ◽  
G. Panczer ◽  
D. Caurant ◽  
D.R. Neuville
Keyword(s):  
Crystal Growth ◽  
Optical Spectroscopy ◽  
Glassy Matrix ◽  
Growth Study

Preferential crystallisation and comparative crystal growth study between pure enantiomer and racemic mixture of a chiral molecule: 5-ethyl-5-methylhydantoin

2001 ◽  
Vol 56 (7) ◽  
pp. 2281-2294 ◽  
Author(s):  
Stéphane Beilles ◽  
Pascal Cardinael ◽  
Elias Ndzié ◽  
Samuel Petit ◽  
Gérard Coquerel
Keyword(s):  
Crystal Growth ◽  
Racemic Mixture ◽  
Chiral Molecule ◽  
Growth Study ◽  
Pure Enantiomer

Crystal growth, optical spectroscopy, and continuous-wave laser operation of co-doped (Ho,Tm):KLu(WO_4)_2 monoclinic crystals

2014 ◽  
Vol 31 (7) ◽  
pp. 1415 ◽  
Author(s):  
Venkatesan Jambunathan ◽  
Andreas Schmidt ◽  
Xavier Mateos ◽  
Maria Cinta Pujol ◽  
Uwe Griebner ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Optical Spectroscopy ◽  
Continuous Wave ◽  
Laser Operation ◽  
Continuous Wave Laser ◽  
Wave Laser ◽  
Co Doped

Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating

2017 ◽  
Vol 196 ◽  
pp. 295-301 ◽  
Author(s):  
Siew-Fang Wong ◽  
Krittanun Deekomwong ◽  
Jatuporn Wittayakun ◽  
Tau Chuan Ling ◽  
Oki Muraza ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Microwave Heating ◽  
Aldol Condensation ◽  
Growth Study ◽  
Catalytic Behavior

Zirconolite-based glass-ceramics for actinides immobilization: Effects of glass composition and of actinides simulant nature

2002 ◽  
Vol 757 ◽  
Author(s):  
Pascal Loiseau ◽  
Daniel Caurant ◽  
Isabelle Bardez ◽  
Odile Majerus ◽  
Noël Baffier ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Field Strength ◽  
Glass Composition ◽  
Glass Ceramics ◽  
Glassy Matrix ◽  
Minor Actinides ◽  
Volume Percentage ◽  
Parent Glass ◽  
Calcium Aluminosilicate ◽  
Molar Substitution

ABSTRACTZirconolite (CaZrTi2O7) based glass-ceramics, in which the crystalline phase (aimed at preferentially incorporating minor actinides or Pu) is embedded in a durable calcium aluminosilicate glassy matrix, can be envisaged as good waste form candidates. In this study, the effect of parent glass composition – and particularly of TiO2, ZrO2, CaO and Al2O3 amounts -on the microstructure and the structure of the glass-ceramics obtained after controlled devitrification (nucleation + crystal growth) is reported. It clearly appears that the volume percentage of zirconolite crystals and their nucleation rate in the bulk of the glass strongly depends both on (CaO + ZrO2 + TiO2) and Al2O3 amounts in parent glass. Neodymium is mainly used to simulate trivalent minor actinides whereas several samples were also prepared with other lanthanides (Ce, Eu, Gd, Yb) in order to investigate the effect of simulant field strength in glass on the nature and the composition of the crystals formed. The effect of partial or total molar substitution of ZrO2 by HfO2 in parent glass composition was also studied in order to prepare Ca(Zr1-xHfx)Ti2O7 (0 < × ≤ 1) based glass-ceramics which could be interesting in order to minimize criticality problems.

Crystal growth, optical spectroscopy, and continuous-wave laser operation of Ho:KLu(WO4)2 crystals

2013 ◽  
Vol 116 (2) ◽  
pp. 455-466 ◽  
Author(s):  
V. Jambunathan ◽  
X. Mateos ◽  
M. C. Pujol ◽  
J. J. Carvajal ◽  
C. Zaldo ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Optical Spectroscopy ◽  
Continuous Wave ◽  
Laser Operation ◽  
Continuous Wave Laser ◽  
Wave Laser

scholarly journals Crystal growth, optical spectroscopy and laser action of Tm^3+-doped monoclinic magnesium tungstate

2017 ◽  
Vol 25 (4) ◽  
pp. 3682 ◽  
Author(s):  
Lizhen Zhang ◽  
Haifeng Lin ◽  
Ge Zhang ◽  
Xavier Mateos ◽  
Josep Maria Serres ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Optical Spectroscopy ◽  
Laser Action

Docetaxel (Taxotere® Trihydrate) Forms: Crystal Structure Determination from XRPD & XRSCD Data

2004 ◽  
Vol 443-444 ◽  
pp. 411-0 ◽  
Author(s):  
L. Zaske ◽  
M.-A. Perrin ◽  
C. Daiguebonne ◽  
O. Guillou
Keyword(s):  
Crystal Structure ◽  
Crystal Growth ◽  
Degrees Of Freedom ◽  
Atomic Scale ◽  
Thin Plates ◽  
Water Molecules ◽  
Ambient Conditions ◽  
Strong Anisotropy ◽  
Growth Study ◽  
Space Method

Docetaxel (form A), a stoichiometric hydrate containing three water molecules per molecule of drug substance (Taxotere®), is thermodynamically stable under ambient conditions of pressure, temperature and relative humidity. In order to gain a better understanding of docetaxel system at the atomic scale a structural study was performed. Due to strong anisotropy of crystals (thin plates), the crystal structure of docetaxel (29 degrees of freedom) was solved and refined using high resolution XRPD data applying an ab initio direct space method. In parallel, an in-depth crystal growth study was carried out until single crystals suitable for XRSCD structural resolution were obtained: surprisingly, a new polymorph of docetaxel, called form B, was isolated.

Crystal growth study of CaGa2S4 Co-doped with Ce3+ and Na+

2008 ◽  
Vol 69 (2-3) ◽  
pp. 400-403 ◽  
Author(s):  
Shinya Oikawa ◽  
Chiharu Hidaka ◽  
Takeo Takizawa
Keyword(s):  
Crystal Growth ◽  
Growth Study ◽  
Co Doped
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