Home | My Profile | Contact Us
Research Trends Products  |   order gateway  |   author gateway  |   editor gateway  
ID:
Password:
Register | Forgot Password

Author Resources
 Author Gateway
 Article submission guidelines

Editor Resources
 Editor/Referee Gateway

Agents/Distributors
 Regional Subscription Agents/Distributors
 
Current Topics in Crystal Growth Research   Volumes    Volume 2  Issue 1
Abstract
Flow and heat transfer during liquid encapsulated Czochralski growth of GaAs with and without an axial magnetic field
P. Sabhapathy, M. E. Salcudean
Pages: 135 - 147
Number of pages: 13
Current Topics in Crystal Growth Research
Volume 2  Issue 1

Copyright © 1995 Research Trends. All rights reserved

ABSTRACT
 
Striations of impurities in Gallium Arsenide crystals grown by the liquid encapsulated Czochralski technique mainly occur due to temperature fluctuations arising from the flow oscillations in the melt. Because molten GaAs has a large electrical conductivity, the thermal convection in the melt can be suppressed by the application of a magnetic field. The flow and heat transfer in the melt and encapsulant, and the heat transfer in the crystal with and without the application of an axial magnetic field are obtained numerically for various combinations of crystal and crucible rotational rates for a 0.104 m diameter crystal growth. When no magnetic field is applied, the flow and temperature fields in the melt are strongly dependent on crystal and crucible rotational rates. The flow in the melt is progressively suppressed by the application of stronger axial magnetic fields but the convection in the melt is significant even for a field strength of 0.5 T. When a magnetic field strength of 0.25 T or more is applied, the isotherms near the crystal-melt interface become flatter and the meridional flow in the melt becomes less sensitive to the rotational rates.
Buy this Article


 
search


E-Commerce
Buy this article
Buy this volume
Subscribe to this title
Shopping Cart

Quick Links
Login
Search Products
Browse in Alphabetical Order : Journals
Series/Books
Browse by Subject Classification : Journals
Series/Books

Miscellaneous
Ordering Information Ordering Information
Downloadable forms Downloadable Forms