Applying the chemical bonding theory of single crystal growth to a Gd3Ga5O12Czochralski growth system: both thermodynamic and kinetic controls of the mesoscale process during single crystal growth

CrystEngComm ◽  
2015 ◽  
Vol 17 (15) ◽  
pp. 2929-2934 ◽  
Author(s):  
Yan Wang ◽  
Congting Sun ◽  
Chaoyang Tu ◽  
Dongfeng Xue
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Chemical Bonding ◽  
Single Crystal Growth ◽  
Bonding Theory ◽  
Growth System ◽  
Mesoscale Process

CRYSTALLIZATION BEHAVIOR OF MAGNESIUM SALTS: A SUMMARY OF SOME EXPERIMENTAL OBSERVATIONS

2009 ◽  
Vol 23 (31n32) ◽  
pp. 3761-3768 ◽  
Author(s):  
DONGFENG XUE ◽  
LONGJIANG ZOU ◽  
LEI WANG ◽  
XIAOXING YAN
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Chemical Bonding ◽  
Crystallization Behavior ◽  
Single Crystal Growth ◽  
Magnesium Salt ◽  
Chemical Systems ◽  
Bonding Theory ◽  
Magnesium Salts ◽  
Reaction Routes

Some efficient methods have been developed to chemically prepare some magnesium salt products with multiscale morphologies such as MgCO 3·3 H 2 O and 5 Mg ( OH )2· MgSO 4·2 H 2 O whiskers, Mg 5( CO 3)4( OH )2·4 H 2 O microplates and aggregates, and Mg ( OH )2 plates and spheres. The crystallization processes of the as-prepared products were studied by designing different reaction routes and corresponding growth morphologies. In these solution chemical systems, Mg 2+ cation was found to be easily coordinated by various ligands, and can be easily transformed into various compounds with variable compositions. The current crystallization observations of some magnesium salts can be readily simulated by the chemical bonding theory of single crystal growth. These results can guide the further studies of various magnesium salts with controllable morphologies.

Effect of Marangoni Convection on InSb Single Crystal Growth by Horizontal Bridgman Method

2001 ◽  
Vol 692 ◽  
Author(s):  
K. Kodera ◽  
A. Kinoshita ◽  
K. Arafune ◽  
Y. Nakae ◽  
A. Hirata
Keyword(s):  
Crystal Growth ◽  
Binary System ◽  
Temperature Gradient ◽  
Single Crystal ◽  
Grown Crystal ◽  
Marangoni Convection ◽  
Single Crystal Growth ◽  
Control Technique ◽  
Growth System

AbstractIt is necessary to clarify the effect of Marangoni convection on single crystal growth from a melt in order to improve the quality of the grown crystal. Particularly, the deviation of crystalmelt (C-M) interface from a planar shape is a major problem because it may deteriorate the quality of the grown crystal. In this paper, we investigated the effect of thermal and solutal Marangoni convection on C-M interface shape in an In-Sb binary system by the horizontal Bridgman (HB) method. The C-M interface concavity strongly depends on the cooling rate and the temperature gradient under uniform concentration distribution conditions in the melt. A large concavity was observed at low cooling rates and high temperature gradient conditions. The concavity was found to be caused by thermal Marangoni convection, by taking Péclet number into account. Then, we varied the composition of the In-Sb binary system to induce solutal Marangoni convection intentionally. The C-M interface was kept planar in case solutal Marangoni convection occurred in the direction opposite to the thermal one. Therefore, we believe that the utilization of solutal Marangoni convection will be a new control technique to make the C-M interface planar for the HB system. From these results, it was clarified that Marangoni convection plays a significant role in the HB crystal growth system.

Chemical Bonding and Single Crystal Growth of ADP Crystals

2013 ◽  
Vol 2 (4) ◽  
pp. 309-315 ◽  
Author(s):  
Xiue Ren ◽  
Congting Sun ◽  
Keyan Li ◽  
Dongli Xu ◽  
Dongfeng Xue
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Chemical Bonding ◽  
Single Crystal Growth
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