Mixed Magnetic Ordering: Magnetic Susceptibility and Mössbauer Studies on Iron(III) Tellurate (Fe2TeO6)

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Abstract
The susceptibility curve of Fe2TeO6 exhibits two peaks, a sharp one at 201°K and a broad one at 233°K. Mössbauer measurements have established the onset of long‐range order at 201°K. The broad peak is thought to be due to some form of short‐range ordering and two models which might be referred to as layering and pairing are considered as possible explanations. These results are also compared with the evidence of neutron‐diffraction experiments. The correlation of these various experiments shows that iron tellurate provides an example of a material with magnetically distinguishable short‐range and long‐range order. Some aspects of this ordering have been compared with “intramolecular antiferromagnetism,” otherwise known as “isolated clustering” in polymeric coordination compounds.