Exploring Potential Beryllium-free, Deep-Ultraviolet Optical Crystals in the Rare Earth Fluoride Carbonate–Water System

2018 ◽  
Vol 18 (6) ◽  
pp. 3644-3653 ◽  
Author(s):  
Qian Wang ◽  
Fangfang He ◽  
Ling Huang ◽  
Daojiang Gao ◽  
Jian Bi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Water System ◽  
Carbonate Water ◽  
Rare Earth Fluoride ◽  
Optical Crystals ◽  
Earth Fluoride ◽  
Deep Ultraviolet ◽  
The Rare Earth

ChemInform Abstract: High-Pressure Syntheses and Characterization of the Rare-Earth Fluoride Borates RE2(BO3)F3(RE: Tb, Dy, Ho).

ChemInform ◽  
2014 ◽  
Vol 45 (6) ◽  
pp. no-no
Author(s):  
Ernst Hinteregger ◽  
Michael Enders ◽  
Almut Pitscheider ◽  
Klaus Wurst ◽  
Gunter Heymann ◽  
...  
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
The Rare Earth

High-pressure Synthesis and Characterization of the Rare-earth Fluoride Borate LaB2O4F

2013 ◽  
Vol 68 (9) ◽  
pp. 951-959 ◽  
Author(s):  
Ernst Hinteregger ◽  
Krisztina Kocsis ◽  
Thomas S. Hofer ◽  
Gunter Heymann ◽  
Lukas Perfler ◽  
...  
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Orthorhombic Space Group ◽  
Raman Spectroscopic ◽  
Rare Earth Fluoride ◽  
High Pressure High Temperature ◽  
Earth Fluoride ◽  
Vibrational Bands ◽  
A Chain ◽  
The Rare Earth

The rare-earth fluoride borate LaB2O4F was synthesized under high-pressure=high-temperature conditions of 1.1 GPa and 1300 °C in a Walker-type multianvil apparatus from lanthanum oxide, lanthanum fluoride, and boron oxide. The single-crystal structure determination revealed that LaB2O4F is isotypic to CeB2O4F. The compound crystallizes in the orthorhombic space group Pbca (no. 61) with eight formula units and the lattice parameters a = 8.2493(9), b = 12.6464(6), c = 7.3301(5) Å , V = 764.7(2) Å3, R1 = 0.0354, and wR2 = 0.0474 (all data). The structure exhibits a 9+1 coordinated lanthanum cation, one threefold coordinated fluoride ion and a chain of corner-sharing [BO3]3- groups. In addition to the IR- and Raman-spectroscopic investigations, DFT calculations were performed to support the assignment of the vibrational bands

ChemInform Abstract: High-Pressure Synthesis and Characterization of the Rare-Earth Fluoride Borate LaB2O4F.

ChemInform ◽  
2013 ◽  
Vol 44 (48) ◽  
pp. no-no
Author(s):  
Ernst Hinteregger ◽  
Krisztina Kocsis ◽  
Thomas S. Hofer ◽  
Gunter Heymann ◽  
Lukas Perfler ◽  
...  
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Synthesis And Characterization ◽  
High Pressure Synthesis ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Pressure Synthesis ◽  
The Rare Earth

Characterization of Rare-Earth Fluoride Anti-Stokes Phosphors by Scanning arid Transmission Electron Microscopy

1971 ◽  
Vol 29 ◽  
pp. 142-143
Author(s):  
N. M. P. Low ◽  
L. E. Brosselard
Keyword(s):  
Electron Microscopy ◽  
Rare Earth ◽  
Elevated Temperatures ◽  
Stoichiometric Composition ◽  
Rare Earth Ions ◽  
Crystalline Solid ◽  
Precipitation Process ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Rare Earth Fluorides

There has been considerable interest over the past several years in materials capable of converting infrared radiation to visible light by means of sequential excitation in two or more steps. Several rare-earth trifluorides (LaF3, YF3, GdF3, and LuF3) containing a small amount of other trivalent rare-earth ions (Yb3+ and Er3+, or Ho3+, or Tm3+) have been found to exhibit such phenomenon. The methods of preparation of these rare-earth fluorides in the crystalline solid form generally involve a co-precipitation process and a subsequent solid state reaction at elevated temperatures. This investigation was undertaken to examine the morphological features of both the precipitated and the thermally treated fluoride powders by both transmission and scanning electron microscopy.Rare-earth oxides of stoichiometric composition were dissolved in nitric acid and the mixed rare-earth fluoride was then coprecipitated out as fine granules by the addition of excess hydrofluoric acid. The precipitated rare-earth fluorides were washed with water, separated from the aqueous solution, and oven-dried.

Thermal Decomposition of Rare Earth Fluoride Hydrates

Science ◽  
1959 ◽  
Vol 129 (3352) ◽  
pp. 842-842 ◽  
Author(s):  
W. W. WENDLANDT ◽  
B. LOVE
Keyword(s):  
Thermal Decomposition ◽  
Rare Earth ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

High-pressure Syntheses and Characterization of the Rare-earth Fluoride Borates RE2(BO3)F3 (RE=Tb, Dy, Ho)

2013 ◽  
Vol 68 (11) ◽  
pp. 1198-1206 ◽  
Author(s):  
Ernst Hinteregger ◽  
Michael Enders ◽  
Almut Pitscheider ◽  
Klaus Wurst ◽  
Gunter Heymann ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Rare Earth ◽  
Monoclinic Space Group ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Structure Determinations ◽  
New Compounds ◽  
Rare Earth Fluorides

The new rare-earth fluoride borates RE2(BO3)F3 (RE=Tb, Dy, Ho) were synthesized under highpressure/ high-temperature conditions of 1:5 GPa=1200 °C for Tb2(BO3)F3 and 3:0 GPa=900 °C for Dy2(BO3)F3 and Ho2(BO3)F3 in a Walker-type multianvil apparatus from the corresponding rareearth sesquioxides, rare-earth fluorides, and boron oxide. The single-crystal structure determinations revealed that the new compounds are isotypic to the known rare-earth fluoride borate Gd2(BO3)F3. The new rare-earth fluoride borates crystallize in the monoclinic space group P21/c (Z = 8) with the lattice parameters a=16:296(3), b=6:197(2), c=8:338(2) Å , b =93:58(3)° for Tb2(BO3)F3, a= 16:225(3), b = 6:160(2), c = 8:307(2) Å , b = 93:64(3)° for Dy2(BO3)F3, and a = 16:189(3), b = 6:124(2), c = 8:282(2) Å , β= 93:69(3)° for Ho2(BO3)F3. The four crystallographically different rare-earth cations (CN=9) are surrounded by oxygen and fluoride anions. All boron atoms form isolated trigonal-planar [BO3]3- groups. The six crystallographically different fluoride anions are in a nearly planar coordination by three rare-earth cations.

In situ high temperature NMR and EXAFS experiments in rare-earth fluoride molten salts

2004 ◽  
Vol 7 (12) ◽  
pp. 1135-1140 ◽  
Author(s):  
Anne-Laure Rollet ◽  
Catherine Bessada ◽  
Aïdar Rakhmatoulline ◽  
Yannick Auger ◽  
Philippe Melin ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Molten Salts ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

One-step synthesis of carboxyl-functionalized rare-earth fluoride nanoparticles for cell imaging and drug delivery

RSC Advances ◽  
2015 ◽  
Vol 5 (43) ◽  
pp. 33999-34007 ◽  
Author(s):  
Zhiyang Zhang ◽  
Xiaoyan Ma ◽  
Zhirong Geng ◽  
Kuaibing Wang ◽  
Zhilin Wang
Keyword(s):  
Drug Delivery ◽  
Rare Earth ◽  
Hydrothermal Treatment ◽  
Cellular Uptake ◽  
Cell Imaging ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
One Step ◽  
Fluoride Nanoparticles

CDDP was loaded onto the surface of carboxyl polymer-coated NaYF4:Yb3+/Tm3+ nanoparticles prepared by hydrothermal treatment in the form of Pt–O bonds, and delivered through cellular uptake of the NaYF4–CDDP composite.

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