Crystal growth by the Electrochemical Czochralski Technique (ECT)

1976 ◽  
Vol 34 (1) ◽  
pp. 1-10 ◽  
Author(s):  
R.C. DeMattei ◽  
R.A. Huggins ◽  
R.S. Feigelson
2001 ◽  
Vol 229 (1-4) ◽  
pp. 217-222 ◽  
Author(s):  
E Kubota ◽  
H Yamazaki ◽  
M Ono ◽  
M Sasaura ◽  
S Yagi ◽  
...  

1993 ◽  
Vol 128 (1-4) ◽  
pp. 694-698 ◽  
Author(s):  
A. Paj¸aczkowska ◽  
P. Byszewski

2001 ◽  
Vol 223 (3) ◽  
pp. 383-388 ◽  
Author(s):  
Kiyoshi Shimamura ◽  
Sonia L Baldochi ◽  
Izilda M Ranieri ◽  
Hiroki Sato ◽  
Tomoyo Fujita ◽  
...  

2001 ◽  
Vol 66 (6) ◽  
pp. 411-418 ◽  
Author(s):  
Aleksandar Golubovic ◽  
Slobodanka Nikolic ◽  
Stevan Djuric ◽  
Andreja Valcic

Sapphire (Al2O3) single crystals were grown by the Czochralski technique both in air and argon atmospheres. The conditions for growing sapphire single crystals were calculated by using a combination of Reynolds and Grash of numbers. Acritical crystal diameter dc = 20 mm and the critical rate of rotation c = 20 rpm were calculated from the hydrodynamics of the melt. The value of the rate of crystal growth was experimentally found to be 3.5 mm/h. According to our previous experiments, it was confirmed that three hours exposures to conc. H3PO4 at 593 K was suitable for chemical polishing. Also, three hours exposure to conc.H3PO4 at 523Kwas found to be a suitable etching solution. The lattice parameters a = 0.47573 nm and c = 1.29893 nm were determined by X-ray powder diffraction. The obtained results are discussed and compared with published data.


2009 ◽  
Vol 311 (22) ◽  
pp. 4652-4659 ◽  
Author(s):  
H. Zhang ◽  
H.S. Fang ◽  
L.L. Zheng ◽  
Z.G. Hu ◽  
G.C. Zhang

1996 ◽  
Vol 453 ◽  
Author(s):  
V. l. Chani ◽  
Y. Myu ◽  
K. Shimamura ◽  
Y. Saiki ◽  
T. Fukuda

AbstractSingle crystals of Ca3(Li,Nb,Ga)5O12 garnets have been grown from stoichiometric melts by micro-pulling down and Czochralski methods using Pt crucibles. It was found that the mixture of oxides with atomic ratio Ca : Li : Nb : Ga = 3 : 0.275 : 1.775 : 2.95 correspond to the garnet composition which melts congruenlly at about 1450°C. Solid state reaction data of the compounds related with this material are also reported. Lattice parameter of all Ca3(Li,Nb,Ga)5O12 crystals grown was about 1.254 nm. Transparent and bubble-free crystals of Ca3LixNb1.5+xGa(3.5+x)Ga(3.5−2x)O12 (x = 0.25 and 0.275) were grown by Czochralski technique in air. An optical transmission spectrum of the crystals was studied. No absorption was detected in 400–1200 nm wavelength range.


2002 ◽  
Vol 11 (4) ◽  
pp. 348-352 ◽  
Author(s):  
Zhong Zeng ◽  
Jingqiu Chen ◽  
Hiroshi Mizuseki ◽  
Touetsu Shishido ◽  
Kyoko Ichinoseki ◽  
...  

2009 ◽  
Vol 54 (9) ◽  
pp. 410-412 ◽  
Author(s):  
I. Ch. Avetissov ◽  
E. V. Zharikov ◽  
A. Yu. Zinovjev ◽  
A. P. Sadovskiĭ

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