Abstract
The temperature variations of the interplanar spacings a(T) and c(T) in the crystal lattice of dysprosium tetraboride have been studied using X-ray diffraction in the temperature range 5–300 K. Anomalous variations of a(T) and c(T) in the temperature range of magnetic transformations, anisotropy of the thermal expansion of DyB4, and the monoclinic distortion of the crystal structure at low temperatures have been revealed. The magnitudes of the spontaneous magnetostriction, the thermal expansion coefficients αa and αc, and the exchange integrals Y a and Y c have been determined.
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Original Russian Text © V.V. Novikov, N.V. Mitroshenkov, 2012, published in Fizika Tverdogo Tela, 2012, Vol. 54, No. 6, pp. 1116–1119.
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Novikov, V.V., Mitroshenkov, N.V. Thermal expansion of dysprosium tetraboride. Phys. Solid State 54, 1186–1190 (2012). https://doi.org/10.1134/S1063783412060261
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DOI: https://doi.org/10.1134/S1063783412060261