scholarly journals Multisite nature and efficient lasing at 1041 and 1302 nm in Nd3+ doped potassium yttrium fluoride

1995 ◽  
Vol 66 (8) ◽  
pp. 926-928 ◽  
Author(s):  
X. X. Zhang ◽  
P. Hong ◽  
M. Bass ◽  
B. H. T. Chai
Keyword(s):  
Yttrium Fluoride ◽  
Efficient Lasing ◽  
Potassium Yttrium Fluoride

Complex admittance study of potassium yttrium fluoride

1994 ◽  
Vol 22 (2-3) ◽  
pp. 159-164 ◽  
Author(s):  
Md. Shareefuddin ◽  
K. Narasimha Reddy ◽  
M. Narasimha Chary
Keyword(s):  
Yttrium Fluoride ◽  
Complex Admittance ◽  
Potassium Yttrium Fluoride

Electrical conduction of potassium yttrium fluoride thin films

1993 ◽  
Vol 194 (1) ◽  
pp. L1-L3 ◽  
Author(s):  
Md. Shareefuddin ◽  
K. Narasimha Reddy ◽  
M. Narasimha Chary
Keyword(s):  
Thin Films ◽  
Electrical Conduction ◽  
Yttrium Fluoride ◽  
Potassium Yttrium Fluoride

Thermally stimulated discharge currents in potassium yttrium fluoride

1992 ◽  
Vol 14 (1) ◽  
pp. L1-L4 ◽  
Author(s):  
Md. Shareefuddin ◽  
U.V. Subba Rao ◽  
K. Narasimha Reddy ◽  
M. Narasimha Chary
Keyword(s):  
Yttrium Fluoride ◽  
Potassium Yttrium Fluoride

Ionic conductivity of doped potassium yttrium fluoride

1990 ◽  
Vol 25 (11) ◽  
pp. K278-K282 ◽  
Author(s):  
Md. Shareefuddin ◽  
U. V. Subba Rao ◽  
K. Narasimha Reddy ◽  
M. Narasimha Chary
Keyword(s):  
Ionic Conductivity ◽  
Yttrium Fluoride ◽  
Potassium Yttrium Fluoride

scholarly journals Barium yttrium fluoride based upconversion nanoparticles as dual mode image contrast agents

2021 ◽  
pp. 111937
Author(s):  
Padmaja Parameswaran Nampi ◽  
Alexander Vakurov ◽  
Hema Viswambharan ◽  
Jürgen E. Schneider ◽  
Rik Drummond-Brydson ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Image Contrast ◽  
Upconversion Nanoparticles ◽  
Dual Mode ◽  
Yttrium Fluoride ◽  
Barium Yttrium ◽  
Barium Yttrium Fluoride

scholarly journals Multi-Step Crystallization and Chemical Evolution of Sodium Yttrium Fluoride

2021 ◽  
Author(s):  
Peter Pauzauskie ◽  
Alexander Bard ◽  
R. Greg Felsted ◽  
Abbie Ganas ◽  
Anupum Pant ◽  
...  
Keyword(s):  
Solid Phase ◽  
Nucleation And Growth ◽  
Intermediate Step ◽  
Gradual Change ◽  
Fluoride Ions ◽  
Aqueous Synthesis ◽  
Yttrium Fluoride ◽  
New Perspective ◽  
Step Mechanism ◽  
Step Crystallization

Abstract Two-step crystallization mechanisms based on spinodal decomposition followed by nucleation are commonly observed both in the laboratory and in nature. While this pathway may require chemical reactions, subsequent nucleation and growth are often considered as separate, discrete events from the reaction itself. Recent work has also shown a distinct intermediate step involving the formation of an amorphous aggregate. Here we report a novel four-step mechanism in the aqueous synthesis of sodium yttrium fluoride involving 1) the segregation of aqueous ions into a dense liquid phase, 2) the formation of an amorphous aggregate, 3) nucleation of a cubic YF3 phase, and 4) subsequent solid-state diffusion of sodium and fluoride ions to form a final NaYF4 phase. The final step involves a continuous, gradual change of the solid phase’s chemical stoichiometry from YF3 toward NaYF4. Unlike previously studied nucleation and growth mechanisms, the stoichiometry of the final solid phase evolves throughout the crystallization process rather than being determined at nucleation. This novel four-step mechanism provides a new perspective into the nucleation and growth of many other crystalline materials given the ubiquity of nonstoichiometric compounds in nature.

Sign in / Sign up

Export Citation Format

Share Document