Magneto-elastic effects in single-crystal USb(0.8)Te(0.2)
A high resolution x-ray diffraction study has been performed on a single crystal of USb(0.8)Te(0.2). At room temperature this material has the face centred cubic (FCC) (NaCl) structure. On cooling through the Néel point of ~205K USb(0.8)Te(0.2) is known to enter a triple-q antiferromagnetic phase. Below T(c) ~ 175K USb(0.8)Te(0.2) is a low temperature ferromagnet with net magnetization along the <111> body diagonal. Four-circle x-ray scattering data from high-symmetry (HOH) and (HHH) reflections are presented as a function of temperature. It was confirmed that this magnetization directly leads to a magneto-elastic distortion of the crystal lattice with a rhombohedral extension along the <111> body diagonals. This distortion is found to correspond to a rhombohedral bond angle of alpha=89.856 +/- 0.004 consistent with previous results. In this single-crystal study evidence is presented for additional associated effects which we attribute to inter-grain stresses and sample mosaic structure.
Bibliographic Reference: Article: Physica B, Condensed Matter
Record Number: 199710798 / Last updated on: 1997-07-02
Original language: en
Available languages: en