TY - GEN
T1 - Effects of a traveling magnetic field on vertical gradient freeze growth of cadmium zinc telluride
AU - Yeckel, Andrew
AU - Derby, Jeffrey J.
PY - 2011
Y1 - 2011
N2 - The effects of a traveling magnetic field (TMF) on vertical gradient freeze (VGF) growth of cadmium zinc telluride (CZT) are studied using a coupled model of magnetic induction, fluid dynamics, and heat transfer. Simulations are performed to determine the influences of current and frequency on melt flow and growth interface shape. A downward traveling electromagnetic wave drives flow downward at the wall, which tends to flatten the interface, whereas an upward traveling wave has the opposite effect. TMF makes a significant impact on interface shape in the absence of thermal buoyancy, but is ineffectual under realistic conditions in a 4 inch diameter ampoule, for which buoyancy dominates Lorentz force throughout the melt.
AB - The effects of a traveling magnetic field (TMF) on vertical gradient freeze (VGF) growth of cadmium zinc telluride (CZT) are studied using a coupled model of magnetic induction, fluid dynamics, and heat transfer. Simulations are performed to determine the influences of current and frequency on melt flow and growth interface shape. A downward traveling electromagnetic wave drives flow downward at the wall, which tends to flatten the interface, whereas an upward traveling wave has the opposite effect. TMF makes a significant impact on interface shape in the absence of thermal buoyancy, but is ineffectual under realistic conditions in a 4 inch diameter ampoule, for which buoyancy dominates Lorentz force throughout the melt.
KW - Crystal growth
KW - cadmium zinc telluride
KW - traveling magnetic field
KW - vertical gradient freeze
UR - http://www.scopus.com/inward/record.url?scp=80055038576&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80055038576&partnerID=8YFLogxK
U2 - 10.1117/12.896543
DO - 10.1117/12.896543
M3 - Conference contribution
AN - SCOPUS:80055038576
SN - 9780819487520
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
T2 - Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
Y2 - 22 August 2011 through 24 August 2011
ER -