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Growth of Cd sub x Hg sub 1x Te: Comparison of Some Properties With the Predictions of Two Melt Growth Models

The theoretical predictions of the two normal freeze growth models involving no convective mixing and complete mixing are described. Crystals have been grown using a range of growth speeds and initial compositions in two temp. profiles designed to affect these conditions in the Cd sub x Hg sub 1x Te... Full description

Journal Title: J. Cryst. Growth Aug. 1983, Vol.62(3), pp.487-497
Main Author: Capper, P
Other Authors: Jones, C , Pearce, E , Quelch, M
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: © ProQuest LLC All rights reserved
ID: ISSN: 0022-0248
Link: http://search.proquest.com/docview/23201392/?pq-origsite=primo
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title: Growth of Cd sub x Hg sub 1x Te: Comparison of Some Properties With the Predictions of Two Melt Growth Models
format: Article
creator:
  • Capper, P
  • Jones, C
  • Pearce, E
  • Quelch, M
subjects:
  • Cadmium Compounds
  • Crystal Growth
  • Mercury Compounds
  • Tellurides
  • Mathematical Models
  • Crystal Properties (MD)
ispartof: J. Cryst. Growth, Aug. 1983, Vol.62(3), pp.487-497
description: The theoretical predictions of the two normal freeze growth models involving no convective mixing and complete mixing are described. Crystals have been grown using a range of growth speeds and initial compositions in two temp. profiles designed to affect these conditions in the Cd sub x Hg sub 1x Te (CMT) system. The axial and radial compositional uniformity found is compared with the predictions of the two models. The relative effects on radial compositional uniformity of isotherm shape, radial segregation, density-driven convective flow and convection imposed by the temp. profiles are also discussed. It is found that radial variations in composition decrease as the growth rate decreases and the variations must be taken into account when interpreting axial composition profiles. It is considered that density-driven convective flow is the most significant force in determining radial variations in composition. Convective flow induced by the temp. profile is also seen to influence these variations while isotherm effects and radial segregation are thought to be much less significant. 13 ref.--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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titleGrowth of Cd sub x Hg sub 1x Te: Comparison of Some Properties With the Predictions of Two Melt Growth Models
creatorCapper, P ; Jones, C ; Pearce, E ; Quelch, M
contributorCapper, P (correspondence author)
ispartofJ. Cryst. Growth, Aug. 1983, Vol.62(3), pp.487-497
identifierISSN: 0022-0248
subjectCadmium Compounds ; Crystal Growth ; Mercury Compounds ; Tellurides ; Mathematical Models ; Crystal Properties (MD)
descriptionThe theoretical predictions of the two normal freeze growth models involving no convective mixing and complete mixing are described. Crystals have been grown using a range of growth speeds and initial compositions in two temp. profiles designed to affect these conditions in the Cd sub x Hg sub 1x Te (CMT) system. The axial and radial compositional uniformity found is compared with the predictions of the two models. The relative effects on radial compositional uniformity of isotherm shape, radial segregation, density-driven convective flow and convection imposed by the temp. profiles are also discussed. It is found that radial variations in composition decrease as the growth rate decreases and the variations must be taken into account when interpreting axial composition profiles. It is considered that density-driven convective flow is the most significant force in determining radial variations in composition. Convective flow induced by the temp. profile is also seen to influence these variations while isotherm effects and radial segregation are thought to be much less significant. 13 ref.--AA
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titleGrowth of Cd sub x Hg sub 1x Te: Comparison of Some Properties With the Predictions of Two Melt Growth Models
descriptionThe theoretical predictions of the two normal freeze growth models involving no convective mixing and complete mixing are described. Crystals have been grown using a range of growth speeds and initial compositions in two temp. profiles designed to affect these conditions in the Cd sub x Hg sub 1x Te (CMT) system. The axial and radial compositional uniformity found is compared with the predictions of the two models. The relative effects on radial compositional uniformity of isotherm shape, radial segregation, density-driven convective flow and convection imposed by the temp. profiles are also discussed. It is found that radial variations in composition decrease as the growth rate decreases and the variations must be taken into account when interpreting axial composition profiles. It is considered that density-driven convective flow is the most significant force in determining radial variations in composition. Convective flow induced by the temp. profile is also seen to influence these variations while isotherm effects and radial segregation are thought to be much less significant. 13 ref.--AA
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abstractThe theoretical predictions of the two normal freeze growth models involving no convective mixing and complete mixing are described. Crystals have been grown using a range of growth speeds and initial compositions in two temp. profiles designed to affect these conditions in the Cd sub x Hg sub 1x Te (CMT) system. The axial and radial compositional uniformity found is compared with the predictions of the two models. The relative effects on radial compositional uniformity of isotherm shape, radial segregation, density-driven convective flow and convection imposed by the temp. profiles are also discussed. It is found that radial variations in composition decrease as the growth rate decreases and the variations must be taken into account when interpreting axial composition profiles. It is considered that density-driven convective flow is the most significant force in determining radial variations in composition. Convective flow induced by the temp. profile is also seen to influence these variations while isotherm effects and radial segregation are thought to be much less significant. 13 ref.--AA
urlhttp://search.proquest.com/docview/23201392/
date1983-08-01