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Solid solutions of paradichlorobenzene in paradibromobenzene with vacancies present in their structure

  • Defects. Dislocations. Physics of Strength
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Abstract

The results of polarization studies of the low-frequency optical Raman spectra of solid solutions of paradibromobenzene with p-dichlorobenzene (10% paradichlorobenzene) are reported. The spectra of lattice vibrations of the mixed crystals are calculated, and it is shown that vacancies can be present in their structure, in agreement with the experimental spectra. The existence of vacancies is manifested by the appearance of secondary lines in the low-frequency spectrum, in the vicinity of 70 cm−1. The intensities of the lines are related to the number of vacancies. The diffusion activation energies in mixed crystals of paradibromobenzene with paradichlorobenzene with vacancies present in their structure are calculated at different temperatures on the basis of the method of atom-atom potentials. It is shown that the activation energy in these mixed crystals is not as dependent on the temperature variation and the crystallographic direction as in crystals of the constituent components.

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Authors and Affiliations

  1. L. V. Kirenskii Institute of Physics, Siberian Branch of the Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

    V. F. Shabanov & M. A. Korshunov

Authors
  1. V. F. Shabanov
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  2. M. A. Korshunov
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Fiz. Tverd. Tela (St. Petersburg) 39, 1564–1566 (September 1997)

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Shabanov, V.F., Korshunov, M.A. Solid solutions of paradichlorobenzene in paradibromobenzene with vacancies present in their structure. Phys. Solid State 39, 1393–1395 (1997). https://doi.org/10.1134/1.1130086

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  • DOI: https://doi.org/10.1134/1.1130086

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