Abstract
The crystal and magnetic structures of Fe1.087Te have been studied by neutron powder diffraction in the temperature range from 1.7 to 80 K at pressures of ≈0.4 and ≈1.2 GPa. No symmetry change of the tetragonal paramagnetic ambient pressure phase (space group P4/nmm) was observed for temperatures above 60 K and pressures up to ≈1.2 GPa. A novel pressure-induced phase of Fe1.087Te having orthorhombic symmetry (space group Pmmn) and incommensurate antiferromagnetic bicollinear order was observed in the temperature range from 50 to 60 K at ≈1.2 GPa. The known monoclinic ambient pressure phase of Fe1.087Te (space group P2 1/n) with commensurate antiferromagnetic order was found to be stable up to at least ≈1.2 GPa at low temperature.
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Jørgensen, JE., Sheptyakov, D. Magnetic ordering in Fe1.087Te under pressure. Eur. Phys. J. B 86, 18 (2013). https://doi.org/10.1140/epjb/e2012-30528-9
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DOI: https://doi.org/10.1140/epjb/e2012-30528-9