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Structural phase transition in (1−x)SrTiO3+xSrMg1/3Nb2/3O3 solid solutions

  • Lattice Dynamics and Phase Transitions
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Abstract

The temperature dependences of the shear modulus and internal friction in ceramic samples of (1−x)SrTiO3+xSrMg1/3Nb2/3O3 solid solutions were studied by the torsional vibration method in the range 80–300 K. It was established that the temperature T a of the O 1h -D 184h structural phase transition in these solid solutions increases with increasing x, although the lattice constant also increases. A discussion is presented of the contributions to the T a (x) dependence due to a change in the volume and changes caused by the presence of a second solid-solution component (the impurity contribution). It is also shown that the defect-induced relaxation revealed earlier in a study of the dielectric properties of these materials manifests itself in internal friction peaks.

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Authors and Affiliations

  1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    V. V. Lemanov & E. P. Smirnova

  2. Voronezh State University, Universitetskaya pl. 1, Voronezh, 394006, Russia

    E. V. Ukhin

Authors
  1. V. V. Lemanov
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  2. E. P. Smirnova
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  3. E. V. Ukhin
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Translated from Fizika Tverdogo Tela, Vol. 46, No. 7, 2004, pp. 1283–1286.

Original Russian Text Copyright © 2004 by Lemanov, Smirnova, Ukhin.

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Lemanov, V.V., Smirnova, E.P. & Ukhin, E.V. Structural phase transition in (1−x)SrTiO3+xSrMg1/3Nb2/3O3 solid solutions. Phys. Solid State 46, 1323–1326 (2004). https://doi.org/10.1134/1.1778459

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  • DOI: https://doi.org/10.1134/1.1778459

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