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This research aims to investigate how postgrowth annealing influences the dislocation structure in germanium single crystals.

March 29, 2026Кристаллография / Crystallography Reports

The Effect of Postgrowth Annealing on the Dislocation Structure of Germanium Crystals

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Experimental study reveals reduced dislocation density in germanium crystals with postgrowth annealing, suggesting improved crystal quality.

This research aims to investigate how postgrowth annealing influences the dislocation structure in germanium single crystals.
Performed postgrowth annealing at 700°C for 40 hours.
Used germanium low-dislocation-density single crystals grown by the Czochralski method.
Measured dislocation density before and after annealing.
Dislocation density in annealed crystals ranged from 14 to 105 cm.
Crystals without annealing exhibited approximately five times higher dislocation density.

Shimanskii et al. (2025) studied this question.

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Experimental study reveals reduced dislocation density in germanium crystals with postgrowth annealing, suggesting improved crystal quality.