Thermostimulated luminescence and x-ray luminescence of chromium- and titanium-doped leucosapphire single crystals

2003 ◽  
Author(s):  
B. M. Hunda ◽  
A. M. Solomon ◽  
T. V. Hunda ◽  
P. P. Puga ◽  
D. I. Bletskan ◽  
...  
Keyword(s):  
Single Crystals ◽  
Thermostimulated Luminescence ◽  
X Ray

X-ray and thermostimulated luminescence of single crystals of leucosapphire

1999 ◽  
Vol 5 (0) ◽  
pp. 178-185
Author(s):  
Б. М. Гунда ◽  
А. М. Соломон ◽  
П. П. Пуга ◽  
Д. І. Блецкан ◽  
Й. Й. Бундаш ◽  
...  
Keyword(s):  
Single Crystals ◽  
Thermostimulated Luminescence ◽  
X Ray

X-ray and thermostimulated luminescence of 0.9 ZrO2–0.1 Y2O3 Single Crystals

1980 ◽  
Vol 62 (2) ◽  
pp. 395-398 ◽  
Author(s):  
P. A. Arsenev ◽  
Kh. S. Bagdasarov ◽  
A. Niklas ◽  
A. D. Ryazantsev
Keyword(s):  
Single Crystals ◽  
Thermostimulated Luminescence ◽  
X Ray

Zone-axis ALCHEMI for the rapid assessment of site occupancies in garnets

1986 ◽  
Vol 44 ◽  
pp. 706-707
Author(s):  
M.T. Otten ◽  
P.R. Buseck
Keyword(s):  
Single Crystals ◽  
Rapid Assessment ◽  
Site Occupancy ◽  
Zone Axis ◽  
Synthetic Compounds ◽  
X Ray ◽  
Large Group ◽  
Crystallographic Planes

ALCHEMI (Atom Location by CHannelling-Enhanced Microanalysis) is a TEM technique for determining site occupancies in single crystals. The method uses the channelling of incident electrons along specific crystallographic planes. This channelling results in enhanced x-ray emission from the atoms on those planes, thereby providing the required site-occupancy information. ALCHEMI has been applied with success to spinel, olivine and feldspar. For the garnets, which form a large group of important minerals and synthetic compounds, the channelling effect is weaker, and significant results are more difficult to obtain. It was found, however, that the channelling effect is pronounced for low-index zone-axis orientations, yielding a method for assessing site occupancies that is rapid and easy to perform.

Effect of trytophan as dopant on potassium acid phthalate single crystals

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Visible Region ◽  
X Ray Diffraction ◽  
X Ray ◽  
Slow Evaporation Technique ◽  
Absorption Studies ◽  
Evaporation Technique ◽  
Potassium Acid Phthalate ◽  
Acid Phthalate

Optically transparent single crystals of potassium acid phthalate (KAP, 0.5 g) 0.05 g and 0.1 g (1 and 2 mol %) trytophan were grown in aqueous solution by slow evaporation technique at room temperature. Single crystal X- ray diffraction analysis confirmed the changes in the lattice parameters of the doped crystals. The presence of functional groups in the crystal lattice has been determined qualitatively by FTIR analysis. Optical absorption studies revealed that the doped crystals possess very low absorption in the entire visible region. The dielectric constant has been studied as a function of frequency for the doped crystals. The thermal stability was evaluated by TG-DSC analysis.

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