TY - JOUR
T1 - Variable temperature neutron powder diffraction study to determine the magnetic interactions in Sr2LnRuO6 (Ln = Ho and Tb)
AU - Parkinson, Neil G.
AU - Hatton, Peter D.
AU - Howard, Judith A.K.
AU - Ritter, Clemens
AU - Ibberson, Richard M.
AU - Wu, Maw Kuen
PY - 2004/11/3
Y1 - 2004/11/3
N2 - Neutron powder diffraction has been used to study the two title compounds, Sr2HoRuO6 and Sr2TbRuO6, in order to determine the crystal and magnetic structures of the materials. Both materials have a distorted double perovskite structure and at temperatures below 30-40 K long-range magnetic order is observed. The magnetic structure for each compound consists of two interpenetrating Type I arrangements, one for the ruthenium sublattice and one for the rare earth sublattice, which are antiferromagnetically coupled to each other and order at the same temperature. From variable temperature measurements the combination of magnetic interactions and their relative strengths was deduced. The antiferromagnetic Ru-O-O-Ru interaction is approximately constant in the compounds, but it is a factor of 2.5 and 0.7 times stronger than the antiferromagnetic Ru-O-Ho and Ru-O-Tb interactions respectively.
AB - Neutron powder diffraction has been used to study the two title compounds, Sr2HoRuO6 and Sr2TbRuO6, in order to determine the crystal and magnetic structures of the materials. Both materials have a distorted double perovskite structure and at temperatures below 30-40 K long-range magnetic order is observed. The magnetic structure for each compound consists of two interpenetrating Type I arrangements, one for the ruthenium sublattice and one for the rare earth sublattice, which are antiferromagnetically coupled to each other and order at the same temperature. From variable temperature measurements the combination of magnetic interactions and their relative strengths was deduced. The antiferromagnetic Ru-O-O-Ru interaction is approximately constant in the compounds, but it is a factor of 2.5 and 0.7 times stronger than the antiferromagnetic Ru-O-Ho and Ru-O-Tb interactions respectively.
UR - http://www.scopus.com/inward/record.url?scp=9144229778&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/16/43/005
DO - 10.1088/0953-8984/16/43/005
M3 - Article
AN - SCOPUS:9144229778
SN - 0953-8984
VL - 16
SP - 7611
EP - 7624
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 43
ER -