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Phase Transitions in the K0.94Cs0.06NO3 Single Crystal

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Abstract

K0.945Cs0.06NO3 single crystals have been grown by isothermal crystallization from an aqueous solution. The growth morphology of the crystals of phases III and II (rhombohedral for III and orthorhombic for II) at the II ↔ III phase transitions is investigated, and the growth rate of the III-phase crystal at the II → III transitions is measured. It is found that the structural transformations in the crystal under study are enantiotropic, and the equilibrium temperature between phases II and III is Т0 = 457 ± 1 К. An empirical relationship between the growth rate and temperature is established in the form ϑ = 0.6374ΔT + 0.9212ΔT 2 – 0.01668ΔT 3, where ΔТ = Тtr – Т0, Тtr is the transformation temperature, and Т0 is the phase equilibrium temperature.

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Authors and Affiliations

  1. Institute of Physics, National Academy of Sciences of Azerbaijan, AZ-1143, Baku, Azerbaijan

    V. I. Nasirov & R. B. Bairamov

  2. Baku Engineering University, AZ-0101, Baku, Azerbaijan

    R. B. Bairamov

  3. Azerbaijan State Pedagogical University, Az-1000, Baku, Azerbaijan

    V. I. Nasirov

  4. Azerbaijan Higher Military Academy named after Heydar Aliev, Baku, Azerbaijan

    E. V. Nasirov

Authors
  1. V. I. Nasirov
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  2. R. B. Bairamov
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  3. E. V. Nasirov
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Correspondence to R. B. Bairamov.

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Translated by Yu. Sinkov

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Nasirov, V.I., Bairamov, R.B. & Nasirov, E.V. Phase Transitions in the K0.94Cs0.06NO3 Single Crystal. Crystallogr. Rep. 67, 1013–1017 (2022). https://doi.org/10.1134/S1063774522060189

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  • DOI: https://doi.org/10.1134/S1063774522060189

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