3 years ago

Mn2TeO6: a Distorted Inverse Trirutile Structure

Mn2TeO6: a Distorted Inverse Trirutile Structure
Pascal Manuel, Oleg I. Lebedev, Dmitry D. Khalyavin, Philippe Boullay, Nicolas Barrier, Christine Martin, Bénédicte Vertruyen, Erik Elkaïm, Françoise Damay, Nami Matsubara
At 700 °C, inverse trirutile Mn2TeO6 crystallizes in a tetragonal structure. When the temperature is decreased, a structural phase transition occurs around 400 °C, to a distorted monoclinic superstructure of the trirutile cell. This complex structure was refined by a combination of in situ neutron, synchrotron, and electron diffraction at room temperature. It consists of an unusual arrangement of relatively regular TeO6 and alternating elongated and compressed MnO6, arguably originating from a cooperative Jahn−Teller effect, leading to a herringbone-like pattern.

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b01269

DOI: 10.1021/acs.inorgchem.7b01269

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