The photoluminescence and structural properties of (Ce, Yb) co-doped silicon oxides after high temperature annealing

2015 ◽  
Vol 117 (4) ◽  
pp. 043101 ◽  
Author(s):  
C. L. Heng ◽  
J. T. Li ◽  
W. Y. Su ◽  
P. G. Yin ◽  
T. G. Finstad
2009 ◽  
Vol 58 (5) ◽  
pp. 3274
Author(s):  
Peng Xian-De ◽  
Zhu Tao ◽  
Wang Fang-Wei

2015 ◽  
Vol 230 ◽  
pp. 228-232 ◽  
Author(s):  
Dmytro Yu. Sugak

The paper is to discuss the main characteristics of the influence of high temperature annealing in different gas environments on the optical and structural properties of congruent lithium niobate crystals.


1985 ◽  
Vol 91 (1) ◽  
pp. K25-K29
Author(s):  
P. I. Baranskii ◽  
V. V. Savyak ◽  
Yu. V. Simonenko ◽  
L. A. Shcherbina

2017 ◽  
Vol 7 (8) ◽  
pp. 3041 ◽  
Author(s):  
C. L. Heng ◽  
W. Xiang ◽  
W. Y. Su ◽  
H. C. Wu ◽  
Y. K. Gao ◽  
...  

2004 ◽  
Vol 19 (12) ◽  
pp. 3463-3473 ◽  
Author(s):  
S.E. Enescu ◽  
L. Thomé ◽  
A. Gentils ◽  
T. Thomé

This paper reports modifications of the chemical and structural properties of MgAl2O4 single crystals implanted with Cs ions and submitted to high-temperature annealing. The composition changes, the damage created in the three sublattices (Al, Mg and O) of the crystals, and the behavior of implanted ions were studied by Rutherford backscattering and channeling experiments as a function of the Cs fluence and annealing temperature. The data show that annealing above 700–800 °C induces a huge modification of the stoichiometry of the material, a decrease of the lattice disorder, and an increase of the fraction of Cs atoms located in substitutional lattice sites. These results have to be taken into account for the future use of spinel as a matrix for the transmutation of nuclear waste.


2004 ◽  
Vol 817 ◽  
Author(s):  
Simona Boninelli ◽  
Fabio Iacona ◽  
Corrado Bongiorno ◽  
Corrado Spinella ◽  
Francesco Priolo

AbstractThe structural properties of Si nanoclusters embedded in SiO2, produced by high temperature annealing of SiOx films, have been investigated by energy filtered transmission electron microscopy. The presence of amorphous nanostructures, not detectable by using dark field transmission electron microscopy, has been demonstrated. By taking into account also this contribution, a quantitative description of the evolution of the samples upon thermal annealing has been accomplished. In particular, the nanocluster mean radius and the density of amorphous and crystalline clusters have been determined as a function of the annealing temperature.


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