Growing Bi–Sb gradient single crystals by a modified Czochralski method

Bi–Sb single crystals with a changed Sb composition to 18at% have been grown by a modified Czochralski method with Sb feed. Gradient single crystals with a lattice parameter gradient of Δc/c̄/Δz=0.972%/cm have been obtained. The effective distribution coefficients of Sb calculated according Ostrogor...

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Bibliographic Details
Published in:Journal of crystal growth 2004-03, Vol.263 (1-4), p.148-155
Main Authors: Kozhemyakin, G.N., Nalivkin, M.A., Rom, M.A., Mateychenko, P.V.
Format: Article
Language:English
Subjects:
A1. Solid solutions
A1. X-ray diffraction
A2. Czochralski method
B1. Alloys
B1. Bismuth compounds
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from melts
zone melting and refining
Materials science
Methods of crystal growth
physics of crystal growth
Physics
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Summary:Bi–Sb single crystals with a changed Sb composition to 18at% have been grown by a modified Czochralski method with Sb feed. Gradient single crystals with a lattice parameter gradient of Δc/c̄/Δz=0.972%/cm have been obtained. The effective distribution coefficients of Sb calculated according Ostrogorsky–Müller model for the gradient crystals growth were used. The influence of the growth parameters: the pulling rate and Sb feeding rate and the melt depth as a function of composition distribution in the bulk was studied. The concentration profiles, the lattice parameter c, the spacing crystalline planes Δd and the dislocation density in the grown Bi–Sb gradient single crystals were measured.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2003.11.089