Observation of a second-order distortion in Nd3Co4Sn13

C. W. Wang, C. N. Kuo, H. F. Liu, C. S. Lue, L. M. Wang, J. W. Lin, K. C. Rule, J. S. Gardner

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Abstract

In this paper we report the resistivity and neutron scattering experiments on Nd3Co4Sn13. These results indicate that Nd3Co4Sn13 undergoes a structural distortion from a high-temperature primitive cubic unit cell to an I-centered superstructure and a concomitant doubling of the lattice constant. The P m -3 n structure of Yb3Rh4Sn13 describes well the neutron powder diffraction pattern collected at room temperature, but failed to fit the low–temperature profiles due to the presence of (h/2 k/2 l)-type diffraction peaks. Single crystal elastic neutron scattering performed in the [h h l] scattering plane shows the lattice distortion with mean field character at 124 (2) K as the temperature is lowered. Besides, three I-centered space groups are excluded by the single crystal diffraction work, including I -4 3 d symmetry which is observed in other R3T4Sn13 compounds.

Original languageEnglish
Pages (from-to)12-15
Number of pages4
JournalPhysica B: Condensed Matter
Volume551
DOIs
Publication statusPublished - 2018 Dec 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Wang, C. W., Kuo, C. N., Liu, H. F., Lue, C. S., Wang, L. M., Lin, J. W., Rule, K. C., & Gardner, J. S. (2018). Observation of a second-order distortion in Nd3Co4Sn13 Physica B: Condensed Matter, 551, 12-15. https://doi.org/10.1016/j.physb.2017.11.060