Growth of high optical quality zinc chalcogenides single crystals doped by Fe and Cr by the solid phase recrystallization technique at barothermal treatment

2017 ◽  
Vol 468 ◽  
pp. 655-661 ◽  
Author(s):  
E. Gavrishuk ◽  
V. Ikonnikov ◽  
T. Kotereva ◽  
D. Savin ◽  
S. Rodin ◽  
...  
2017 ◽  
Vol 457 ◽  
pp. 275-281 ◽  
Author(s):  
Eugeni Gavrishuk ◽  
Vladimir Ikonnikov ◽  
Tatyana Kotereva ◽  
Vladimir Pimenov ◽  
Dmitry Savin ◽  
...  

Author(s):  
Софья Михайловна Маслобоева

Проведен анализ известных методов синтеза шихты ниобата лития, легированной бором, которая используется при выращивании монокристаллов высокого оптического качества методом Чохральского. Установлено, что способ гомогенного легирования (шихта получается из прекурсора NbO :B и LiCO) по сравнению с твердофазным (шихта получается из смеси LiCO: NbO : HBO ) позволяет выращивать кристаллы LiNbO: B с более однородным распределением в них примеси бора, а также в объеме расплава, при этом упрощаются технологические режимы, устанавливаемые при росте кристаллов. В работе впервые рассмотрен жидкофазный метод синтеза шихты, исключающий стадию прокалки гомогенизированной смеси пентаоксида ниобия и карбоната лития. Результаты имеют важное значение при выборе технологии выращивания легированных бором монокристаллов ниобата лития для конкретных областей техники. Known methods of a boron doped lithium niobate charge synthesis were analyzed. Such a charge is applied for the growth by Czochralski of single crystals with high optical quality. Homogeneous doping (the charge is obtained from precursor NbO:B and LiCO) was compared with solid phase doping (the charge is obtained from the mixture LiCO: NbO: HBO). Homogeneous doping was determined to help produce LiNbO: B crystals with a more uniform distribution of a boron dopant, boron distributes more uniform in the melt volume; technological regimes established during crystal growth become easier. For the first time the paper considers liquid-phase charge synthesis method; the method excludes the stage of annealing of homogenized mixture of niobium pentoxide and lithium carbonate. Results are crucial for the choice of technology at growing of boron doped lithium niobate crystals for exact areas of technics.


1996 ◽  
Vol 80 (5) ◽  
pp. 2983-2989 ◽  
Author(s):  
E. Tournié ◽  
C. Morhain ◽  
G. Neu ◽  
M. Laügt ◽  
C. Ongaretto ◽  
...  

2001 ◽  
Vol 16 (5) ◽  
pp. 1245-1248 ◽  
Author(s):  
J. A. Garcia ◽  
V. Muñoz ◽  
C. Martinez-Tomas ◽  
J. J. S. Garitaonandia

A close relationship between the photoluminescence emissions labeled Y and S, related to dislocations and extended structural defects, and the preparation of the surface state of ZnSe single crystals before PL (photoluminescence) measurements has been established. The samples were obtained by solid-phase recrystallization under different pressure conditions. An easy method for achieving good quality surfaces with a very significant reduction of such Y and S PL emissions is proposed.


1994 ◽  
Author(s):  
Dmitry Y. Sugak ◽  
Andrej O. Matkovskii ◽  
E. A. Korobenko ◽  
Anatolij I. Mikhalevych ◽  
Ivan M. Solskii ◽  
...  

2020 ◽  
Vol 221 ◽  
pp. 117079 ◽  
Author(s):  
Marco Cinquino ◽  
Laura Polimeno ◽  
Giovanni Lerario ◽  
Milena De Giorgi ◽  
Anna Moliterni ◽  
...  

1996 ◽  
Vol 68 (10) ◽  
pp. 1356-1358 ◽  
Author(s):  
E. Tournié ◽  
C. Morhain ◽  
G. Neu ◽  
J.‐P. Faurie ◽  
R. Triboulet ◽  
...  

1999 ◽  
Vol 607 ◽  
Author(s):  
B. H. Bairamov ◽  
N. Fernelius ◽  
G. Irmer ◽  
J. Monecke ◽  
I. K. Polushina ◽  
...  

AbstractInelastic light scattering by optical phonons and the temperature dependent electrical conductivity, Hall constant and photosensitivity were studied in oriented CdGeAs2 crystals grown by ultra-low gradient freeze technique from near-stoichiometric melts. Observation of the clear polarization dependence of the inelastic light scattering spectra by optical phonons combined with the absence of any dependence of the intensity and frequency shift of the observed lines with mapping measurements in 300 μm steps indicated the high optical quality and homogeneity of these single crystals. It is shown that surface-barrier structures using these single crystals may be used as wide-band detectors for natural light, as well as selective photoanalyzers for linearly polarized radiation.


CrystEngComm ◽  
2022 ◽  
Author(s):  
Inga Vasilyeva ◽  
Ruslan Nikolaev

Advances and limitations in the field of growing large, a high optical quality single crystals of AgGaS2 (AGS), AgGaGeS4 (AGGS), ZnGeP2 (ZGP), LiInS2 (LIS), LiGaS2 (LGS), LiInSe2 (LISe), LiGaSe2 (LGSe)...


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