TY - JOUR

T1 - Neutron-diffraction studies of two-dimensional magnetic ordering in TbRu2Si2

AU - Kawano, S.

AU - Lebech, Bente

AU - Shigeoka, T.

AU - Iwata, N.

PY - 2002

Y1 - 2002

N2 - We have studied the magnetic ordering of TbRU2Si2 by neutron diffraction. Below T-N, the order is confirmed to be one-dimensional, with a propagation vector Q = (3/13 0 0). At T-t similar to 5 K and T-t' similar to 4 K there are additional phase transitions giving rise to a number of magnetic satellites, not only on high-symmetry lines, but also on low-symmetry lines in the a*-b* reciprocal lattice plane. The satellites on highsymmetry lines are described by the fundamental modulation vector Q = (3/13 0 0) and its odd harmonics, while the satellites on low-symmetry lines are given by Q = (mtau ntau 0), where m and n are odd. The diffraction patterns show that, below Tt, the magnetic structures are never one-dimensional as previously reported, but the order is consistent with a two dimensional model having a 13a x 13a x c magnetic unit cell, containing two frustrated Tb sites, one at the corner and the other at the body-centered position. Below T-t', the order is more complex.

AB - We have studied the magnetic ordering of TbRU2Si2 by neutron diffraction. Below T-N, the order is confirmed to be one-dimensional, with a propagation vector Q = (3/13 0 0). At T-t similar to 5 K and T-t' similar to 4 K there are additional phase transitions giving rise to a number of magnetic satellites, not only on high-symmetry lines, but also on low-symmetry lines in the a*-b* reciprocal lattice plane. The satellites on highsymmetry lines are described by the fundamental modulation vector Q = (3/13 0 0) and its odd harmonics, while the satellites on low-symmetry lines are given by Q = (mtau ntau 0), where m and n are odd. The diffraction patterns show that, below Tt, the magnetic structures are never one-dimensional as previously reported, but the order is consistent with a two dimensional model having a 13a x 13a x c magnetic unit cell, containing two frustrated Tb sites, one at the corner and the other at the body-centered position. Below T-t', the order is more complex.

KW - 5-I nano

U2 - 10.1007/s003390201619

DO - 10.1007/s003390201619

M3 - Journal article

VL - 74

SP - S643-S645

JO - Applied Physics A: Materials Science & Processing

JF - Applied Physics A: Materials Science & Processing

SN - 0947-8396

IS - Supplement

ER -