Effects of a traveling magnetic field on vertical gradient freeze growth of cadmium zinc telluride

Andrew Yeckel, Jeffrey J Derby

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
Volume8142
DOIs
StatePublished - Nov 2 2011
EventHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII - San Diego, CA, United States
Duration: Aug 22 2011Aug 24 2011

Other

OtherHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII
CountryUnited States
CitySan Diego, CA
Period8/22/118/24/11

Keywords

  • Crystal growth
  • cadmium zinc telluride
  • traveling magnetic field
  • vertical gradient freeze

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