Synthesis of Uniform Rare Earth Fluoride (NaMF4) Nanotubes by In Situ Ion Exchange from Their Hydroxide [M(OH)3] Parents

ACS Nano ◽  
2008 ◽  
Vol 3 (1) ◽  
pp. 159-164 ◽  
Author(s):  
Fan Zhang ◽  
Dongyuan Zhao
Keyword(s):  
Rare Earth ◽  
Ion Exchange ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

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

In-situ dopant-induced nano-crystallization of rare-earth-fluoride crystals in phase-separated networks for highly-efficient photoemission and photonic devices

2021 ◽  
Author(s):  
Zaijin Fang ◽  
Jianfeng Li ◽  
Li-Peng Sun ◽  
Yanyan Zhi ◽  
Yi Long ◽  
...  
Keyword(s):  
Rare Earth ◽  
Glass Ceramics ◽  
Photonic Devices ◽  
Quantum Yields ◽  
Rare Earth Fluoride ◽  
Highly Efficient ◽  
Earth Fluoride ◽  
Fluoride Crystals

Oxy-fluoride nano-crystallized glass ceramics (NGCs), integrated advantages of amorphous glasses and fluoride crystals, show great potential for applications in lighting, information storages and lasers. However, the photoluminescence quantum yields (PLQYs)...

Correction to Formation of Hollow Upconversion Rare-Earth Fluoride Nanospheres: Nanoscale Kirkendall Effect During Ion Exchange

2012 ◽  
Vol 24 (13) ◽  
pp. 2619-2619 ◽  
Author(s):  
Fan Zhang ◽  
Yifeng Shi ◽  
Xiaohong Sun ◽  
Dongyuan Zhao ◽  
Galen D. Stucky
Keyword(s):  
Rare Earth ◽  
Ion Exchange ◽  
Kirkendall Effect ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

Formation of Hollow Upconversion Rare-Earth Fluoride Nanospheres: Nanoscale Kirkendall Effect During Ion Exchange

2009 ◽  
Vol 21 (21) ◽  
pp. 5237-5243 ◽  
Author(s):  
Fan Zhang ◽  
Yifeng Shi ◽  
Xiaohong Sun ◽  
Dongyuan Zhao ◽  
Galen D. Stucky
Keyword(s):  
Rare Earth ◽  
Ion Exchange ◽  
Kirkendall Effect ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

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.

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