E. F. Dolzhenkova

Growth, structure, and luminescence properties of LaB3O6 single crystals

Abstract LaB 3 O 6 single crystals have been first grown by Czochralski technique in an oxygen atmosphere from platinum crucibles. The compound structure has been precisely determined; absorption, X-ray- and thermostimulated luminescence spectra of the crystals have been studied. The luminescence mechanism of LaB 3 O 6 single crystals is discussed and associated with the hole center based on the structure defect (La 3+ vacancy).

Growth of single crystals of Li6Y1−xEux(BO3)3 (x = 0–1) solid solutions by the Czochralski method

The mutual solubility in the Li6Y(BO3)3-Li6Eu(BO3)3 system was investigated by differential thermal analysis and X-ray phase analysis. Single crystals of the Li6Y1−xEux(BO3)3 solid solutions more than 1 cm3 in volume were grown by the Czochralski method. The photoluminescence and thermoluminescence properties of the crystals grown are studied.

Macro- and microdefects in Czochralski-grown Li6GdB3O9 and Li6-xNaxGdB3O9 single crystals

Macro- and microdefects in Czochralski-grown Li6GdB3O9 crystals (unmodified and Na-modified) are investigated.

Slip and cleavage systems in the new crystal Li6YB3O9

AbstractThe structure of single crystals of the double lithium-yttrium borate Li6YB3O9 is investigated. It is shown that the cleavage planes are parallel to the layers that are located at the largest distance from each other and characterized by the weakest electrostatic interaction. Thus, cleavage of a crystal occurs through the longest Li-O bonds in the lithium five-vertex polyhedra and the bridge Y-O bonds. It is ascertained that slip in Li6YB3O9 occurs in the planes that are most close packed with respect to oxygen ions, while the reason for the absence of plastic deformation at room temperature is that

Crack resistance and atomic structure of Li2B4O7 single crystals

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Growth and defect structure of basal-plane-faceted sapphire ribbons

B triangles impede the motion of

Czochralski growth and optical properties of Li6Gd1−xEux(BO3)3 (x=0–1) single crystals

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