scholarly journals Structural and optical characterization of crystals obtained via solid state reactions in the In2O3–TiO2–Al2O3 pseudoternary system

2019 ◽  
Vol 1 (5) ◽  
Author(s):  
C. L. Medrano-Pesqueira ◽  
Francisco Brown ◽  
Doris Möncke ◽  
Dominique de Ligny ◽  
Judith Tanori ◽  
...  
2021 ◽  
Author(s):  
Dominik Göbel ◽  
Pascal Rusch ◽  
Daniel Duvinage ◽  
Tim Stauch ◽  
Nadja C. Bigall ◽  
...  

The synthesis and optical characterization of novel single-benzene ESIPT-based fluorophores is described in solid state and in solution. Special attention is given towards the influence of their unique substitution pattern on their optical properties. Depending on this pattern, aggregation induced emission or aggregation caused quenching (ACQ) is observed in the solid state.<br>


2008 ◽  
Vol 591-593 ◽  
pp. 644-648
Author(s):  
J.M.A. Gimenez ◽  
Carlos Roberto Grandini ◽  
A.R. Jurelo

A new class of hybrid ruteno-cuprates – such as Ru-1212 and Ru-1222 – was discovered in 1995 by Bauerfeind and collaborators. These materials present superconducting and magnetic states at low temperatures, an atypical duality in other superconductors. The superconductivity is more easily observed in Ru-1222, while Ru-1212 is a more problematic case, due to the strong effects of the preparation details in its superconducting properties, becoming the material superconductor or not. Ru-1212 presents a critical temperature that can vary between 0 and 46 K, depending on the preparation conditions, and a temperature of magnetic transition of around 132 K. The samples were prepared through solid state reactions, by using a mixture of high purity powders, followed by calcination and sinterization in the nitrogen and oxygen atmospheres. This paper shows the preparation process of Ru-1212 samples, followed by their structural and magnetic characterization.


1992 ◽  
Vol 242 ◽  
Author(s):  
Kelly L. Moran ◽  
Andrew W. Ott ◽  
Thurman E. Gier ◽  
William T. A. Harrison ◽  
Hellmut Eckert ◽  
...  

ABSTRACTSeveral series of sodali te analogues of unit cell composition M8X2(TO2)12, where M is Zn or Cd, X is a chalcogen, and T is a tetrahedral cation B, or Be in combination with Si or Ge, have been prepared. An M4X tetrahedron, which is the first coordination sphere of the bulk semiconductor MX, sits at the center of each sodalite cage. These materials have been structurally characterized by solid state 77Se and 125STe MAS NMR and by powder X-ray diffraction. Diffuse reflectance optical absorption spectra are reported for each series. The borates have optical properties similar to the bulk MX whereas the beryllosilicates and germanates exhibit large blue shifts in the absorption spectra.


1993 ◽  
Vol 322 ◽  
Author(s):  
D. Zeng ◽  
M. J. Hampden-Smith ◽  
L.-M. Wang

AbstractCo-reduction of mixtures of MoCl3(THF)3 and SiCls4 in THF using Li/C10H8 or both Li/C10Hs8 and LiBEt3H resulted in formation and separation of black powders which upon thermal annealing at temperatures ranging from 750°C to 1 100°C produced crystalline molybdenum silicide and silicon carbide composite. Co-reduction of mixtures of WCI4 and GeBr4 with LiBEt3H in THF formed W2C and elemental Ge which upon thermal treatment at 750°C for 4 hours generated a small amount of crystalline W5Ge3.


1985 ◽  
Vol 30 (1) ◽  
pp. 251-262 ◽  
Author(s):  
T. Sun ◽  
T. Kyu ◽  
J. Sheng ◽  
D. Lefebvre ◽  
R. S. Stein ◽  
...  

2013 ◽  
Vol 63 (12) ◽  
pp. 2362-2366 ◽  
Author(s):  
Myoung Gyu Ha ◽  
Jae-Sun Jeong ◽  
Kyoung-Rim Han ◽  
Yu Ri Bae ◽  
Ju Sung Kim ◽  
...  

2007 ◽  
Vol 129 (36) ◽  
pp. 10968-10969 ◽  
Author(s):  
Medhat A. Shaibat ◽  
Leah B. Casabianca ◽  
Nalinda P. Wickramasinghe ◽  
Stephen Guggenheim ◽  
Angel C. de Dios ◽  
...  

1990 ◽  
Vol 22 (S1) ◽  
pp. S167-S198 ◽  
Author(s):  
B. Henderson ◽  
M. Yamaga ◽  
K. P. Donnell

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