Neutron-diffraction study ofCeCuGa3

J. M. Martin, M. R. Lees, D. McK. Paul, P. Dai, C. Ritter, Y. J. Bi
1998 Physical Review B (Condensed Matter)  
Neutron-diffraction experiments have been performed on both polycrystalline and single-crystal samples of CeCuGa 3 . The results of the powder diffraction experiments show that CeCuGa 3 adopts an incommensurate magnetic structure at 1.25 K. The propagation wave vector associated with the magnetic ordering k m is ͑0.176, 0.176, 0͒, and the magnitude of the magnetic moment in the ordered state is 1.24Ϯ0.02 B . Singlecrystal neutron diffraction confirmed the existence of magnetic satellite peaks
more » ... c satellite peaks at Q values determined by the wave vector k m . Additional satellites have been observed in the single-crystal diffraction experiments with an incommensurate propagation vector of k s ϭ(0.137, 0.137, 0). These are probably the result of a short-ranged modulation of the crystal structure.
doi:10.1103/physrevb.57.7419 fatcat:rl4ttwufmrcipitbgotxv6g4pi