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The distribution of Ga and Sb impurities in Ge-Si crystals grown by the Bridgman method using a feeding rod

Journal Article · · Crystallography Reports
 [1];  [2]
  1. Ganja State University (Azerbaijan)
  2. National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)
Gallium- and antimony-doped Ge{sub 1-x}Si{sub x} crystals (0 {<=} x {<=} 0.25) have been grown by the improved Bridgman method using a silicon seed and a macrohomogeneous feeding Ge-Si rod of the corresponding composition. The impurity concentration profiles along the grown crystals were determined from Hall measurements. The mathematical problem of impurity distribution along two-component mixed crystals grown from a melt with uniform and graded composition is solved in the Pfann approximation and within the virtual-crystal model for the solid solution. It is shown that the experimental impurity distributions in Ge{sub 1-x}Si{sub x} crystals are described well by the data calculated on the assumption of linear change in the impurity segregation coefficient with the crystal composition.
OSTI ID:
22050862
Journal Information:
Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 1 Vol. 54; ISSN 1063-7745; ISSN CYSTE3
Country of Publication:
United States
Language:
English

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