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Thermal expansion and mean-square displacements of metal and boron atoms in dysprosium diboride DyB2

  • Lattice Dynamics and Phase Transitions
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Abstract

Dysprosium diboride is investigated by x-ray diffraction in the temperature range 4.2–300 K. The data obtained are used to determine the (301) and (104) interplanar distances and the corresponding intensities of the x-ray reflections. The calculated linear and bulk thermal expansion coefficients of the DyB2 compound are characterized by a pronounced anomaly in the temperature range corresponding to the magnetic transformation. The estimates of the mean-square displacements for the Dy and B atoms (calculated from the reflection intensities) are satisfactorily described by the Debye dependences with the characteristic temperatures θDy = 210 K and θB = 800 K.

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Authors and Affiliations

  1. Petrovsky Bryansk State University, Bezhitskaya ul. 14, Bryansk, 241036, Russia

    V. V. Novikov, T. A. Chukina & A. V. Matovnikov

  2. Khmelnitskiy National University, Institutskaya ul. 11, Khmelnitskiy, 29016, Ukraine

    V. V. Novikova

Authors
  1. V. V. Novikov
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  2. T. A. Chukina
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  3. A. V. Matovnikov
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  4. V. V. Novikova
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Correspondence to V. V. Novikov.

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Original Russian Text © V.V. Novikov, T.A. Chukina, A.V. Matovnikov, V.V. Novikova, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 8, pp. 1486–1488.

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Novikov, V.V., Chukina, T.A., Matovnikov, A.V. et al. Thermal expansion and mean-square displacements of metal and boron atoms in dysprosium diboride DyB2 . Phys. Solid State 50, 1544–1547 (2008). https://doi.org/10.1134/S106378340808026X

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  • DOI: https://doi.org/10.1134/S106378340808026X

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