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One-Dimensional Analysis of Segregation in Directionally Solidified HgCdTe

A one-dimensional model for solute redistribution is developed that can be applied to solid-solution alloys with widely separated liquidus and solidus phase diagrams. The model is applied to the HgCdTe system and accounts for the variation in interface temp., segregation coefficient and growth veloc... Full description

Journal Title: J. Cryst. Growth Dec. 1982, Vol.60(2), pp.374-380
Main Author: Clayton, J
Other Authors: Davidson, M , Gillies, D , Lehoczky, S
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: © ProQuest LLC All rights reserved
ID: ISSN: 0022-0248
Link: http://search.proquest.com/docview/23485108/?pq-origsite=primo
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recordid: proquest23485108
title: One-Dimensional Analysis of Segregation in Directionally Solidified HgCdTe
format: Article
creator:
  • Clayton, J
  • Davidson, M
  • Gillies, D
  • Lehoczky, S
subjects:
  • Mercury Compounds
  • Crystal Growth
  • Cadmium Compounds
  • Tellurides
  • Directional Solidification
  • Segregations
  • Crystal Properties (MD)
ispartof: J. Cryst. Growth, Dec. 1982, Vol.60(2), pp.374-380
description: A one-dimensional model for solute redistribution is developed that can be applied to solid-solution alloys with widely separated liquidus and solidus phase diagrams. The model is applied to the HgCdTe system and accounts for the variation in interface temp., segregation coefficient and growth velocity with composition. The model considers a finite length ampoule, treating both initial and final transient segregation. Agreement between the model and experimental results is good, indicating that the axial solute redistribution in directionally solidified HgCdTe crystals is dominated by diffusion. Comparison of the model to experiment in the final transient region gives values for the effective diffusion constant of 5 x 10 exp 5 to 7 x 10 exp 5 cm exp 2 /s.--AA
language: eng
source: © ProQuest LLC All rights reserved
identifier: ISSN: 0022-0248
fulltext: fulltext
issn:
  • 00220248
  • 0022-0248
url: Link


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titleOne-Dimensional Analysis of Segregation in Directionally Solidified HgCdTe
creatorClayton, J ; Davidson, M ; Gillies, D ; Lehoczky, S
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ispartofJ. Cryst. Growth, Dec. 1982, Vol.60(2), pp.374-380
identifierISSN: 0022-0248
subjectMercury Compounds ; Crystal Growth ; Cadmium Compounds ; Tellurides ; Directional Solidification ; Segregations ; Crystal Properties (MD)
descriptionA one-dimensional model for solute redistribution is developed that can be applied to solid-solution alloys with widely separated liquidus and solidus phase diagrams. The model is applied to the HgCdTe system and accounts for the variation in interface temp., segregation coefficient and growth velocity with composition. The model considers a finite length ampoule, treating both initial and final transient segregation. Agreement between the model and experimental results is good, indicating that the axial solute redistribution in directionally solidified HgCdTe crystals is dominated by diffusion. Comparison of the model to experiment in the final transient region gives values for the effective diffusion constant of 5 x 10 exp 5 to 7 x 10 exp 5 cm exp 2 /s.--AA
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abstractA one-dimensional model for solute redistribution is developed that can be applied to solid-solution alloys with widely separated liquidus and solidus phase diagrams. The model is applied to the HgCdTe system and accounts for the variation in interface temp., segregation coefficient and growth velocity with composition. The model considers a finite length ampoule, treating both initial and final transient segregation. Agreement between the model and experimental results is good, indicating that the axial solute redistribution in directionally solidified HgCdTe crystals is dominated by diffusion. Comparison of the model to experiment in the final transient region gives values for the effective diffusion constant of 5 x 10 exp 5 to 7 x 10 exp 5 cm exp 2 /s.--AA
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date1982-12-01