10 research outputs found
Magnetic Properties of TbNi1 xAuxIn Compounds
Polycrystalline samples of for x = 0.1, 0.2, 0.4, 0.6 and 0.8 were prepared and studied by powder X-ray and neutron diffraction and ac magnetic susceptibility measurements. These compounds crystallize in the hexagonal ZrNiAl-type structure. With increasing Au content a change in the magnetic structure is observed. For x = 0.1, 0.2 and 0.4 the magnetic order is described by the propagation vector k = (1/2, 0, 1/2) while for x = 0.8 by k = (0, 0, 1/2). Between 1.5 K and the Néel temperature the magnetic order is stable
Magnetic ordering of TbRu2 xPdxSi2 solid solutions investigated by magnetometric and powder neutron diffraction methods
Neutron diffraction and magnetisation studies of magnetic ordering in RAuIn R Tb, Dy, Ho
Magnetic structure of RCuIn R Nd, Tb, Ho, Er
Magnetic and neutron diffraction measurements of RCuIn (R = Nd, Tb, Ho, Er) are reported. The compounds crystallize in the hexagonal ZrNiAl-type structure. The ZrNiAl lattice originates from a distortion of a kagomélattice. The studied compounds are antiferromagnets with the Néel temperature equal to 4.9 K for R = Nd, 14.5 K for R = Tb, 4.5 K for R = Ho and 3.5 K for R = Er. The magnetic ordering is described by the propagation vectorwe k = (1/2, 1/2, ) with equal to 0.161(6) for R = Nd, 0.2213(5) for R = Tb, 0.2510(3) for R = Ho and 0 for R = Er. The magnetic structure is noncollinear with magnetic moments in the basal plane for R = Nd, Tb and Ho and collinear with magnetic moments parallel to the c-axis for R = Er. The observed magnetic ordering results from the competition between exchange interactions of the Ruderman-Kittel-Kasuya-Yosida type, the geometrical frustration of the rare-earth magnetic moments and the influence of the crystal electric field. The latter affects the direction of magnetic moments and is responsible for the magnetic crystalline anisotropy