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Effect of Crystallization Front Shape on the Dislocation Density in Germanium Single Crystals

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Abstract

The effect of crystallization front shape on the dislocation density in Ge single crystals with a diameter of 100 mm, grown by the Czochralski method, has been studied. The dislocation density in crystals with a convex crystallization front is found to be considerably higher. The average dislocation density in experimental ingots with deviation of crystallization front shape from flat in the range from –1.5 to +1.5 mm increases from 75 to 1000 cm–2 and from 75 to 700 cm–2 in the cases of convex and concave fronts, respectively. Minimum dislocation densities are observed for a flat or slightly concave front.

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ACKNOWLEDGMENTS

This work was supported by the Russian Foundation for Basic Research, the Government of Krasnoyarsk Krai, and the Krasnoyarsk Krai Foundation for Support of Scientific and Technical Activity, within scientific project no. 16-43-240719.

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Authors and Affiliations

  1. Siberian Federal University, 660041, Krasnoyarsk, Russia

    A. F. Shimanskii, D. V. Eremin & E. D. Kravtsova

  2. JSC “Germanium,”, 660027, Krasnoyarsk, Russia

    O. I. Podkopaev, T. O. Pavlyuk & D. V. Eremin

Authors
  1. A. F. Shimanskii
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  2. O. I. Podkopaev
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  3. T. O. Pavlyuk
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  4. D. V. Eremin
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  5. E. D. Kravtsova
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Corresponding authors

Correspondence to A. F. Shimanskii or T. O. Pavlyuk.

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Translated by D. Churochkin

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Shimanskii, A.F., Podkopaev, O.I., Pavlyuk, T.O. et al. Effect of Crystallization Front Shape on the Dislocation Density in Germanium Single Crystals. Crystallogr. Rep. 63, 1183–1186 (2018). https://doi.org/10.1134/S1063774518070222

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  • DOI: https://doi.org/10.1134/S1063774518070222

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