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The growth and mechanical properties of paratellurite single crystals at high temperatures

  • Dedicated to the Memory of B.N. Grechushnikov
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Abstract

α-TeO2 single crystals have been grown by the Czochralski method on specially developed systems with automatic growth control. The mechanical properties of crystals under compression in the [100], [110], and [221] directions at a constant strain rate of about 10−4 s−1 in the temperature range T = 733−993 K have been investigated. The distribution of plastic shear strain in deformed samples is has been experimentally studied. Manifestations of localized strain in covalent paratellurite crystals at T > 900 K are revealed for the first time. The active slip systems along which localized shear band are oriented are determined. The temperature dependence of the critical stress of transition to localized flow is investigated.

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Correspondence to N. P. Skvortsova.

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Original Russian Text © N.P. Skvortsova, V.A. Lomonov, A.V. Vinogradov, 2011, published in Kristallografiya, 2011, Vol. 56, No. 1, pp. 72–76.

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Skvortsova, N.P., Lomonov, V.A. & Vinogradov, A.V. The growth and mechanical properties of paratellurite single crystals at high temperatures. Crystallogr. Rep. 56, 67–71 (2011). https://doi.org/10.1134/S1063774510061136

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  • DOI: https://doi.org/10.1134/S1063774510061136

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