Abstract
The structure of Mn 2(OH) 2(C 4O 4) consists of chains of hydroxide-bridged edge sharing triangles separated by the squarate anions. Here we present the variable temperature magnetic structure of a fully deuterated sample, along with new magnetic susceptibility data and inelastic neutron scattering measurements. The material becomes a 3-D antiferromagnet at 12 K, showing that the previous assignment of magnetic data was incorrect. The dynamic behaviour of this low-dimensional system is thought to be strongly influenced by short-range fluctuations—both above and below the transition to long-range order. This has been observed in the background contribution to the diffraction pattern and using inelastic neutron scattering. The initial results of neutron scattering are presented.
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