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Figure 3
(Top) Rietveld refinement of the neutron powder diffraction pattern of synthetic FeWO4 measured at D20 at 300 K [λ = 1.54119 (3) Å]. The experimental data and calculated profile are shown as red and black lines, respectively, while the blue curve represents the difference. Vertical green, orange and red ticks indicate the Bragg reflection positions of the different phases. The second phase (orange ticks) corresponds to V from the sample holder, whereas the third phase (red ticks) is attributed to Fe2WO6, refined in the orthorhombic Pbcn space group with lattice parameters a = 4.6000 (6), b = 16.814 (3), c = 4.9674 (7) Å. This contribution was modeled using a Le Bail approach, leading to a final χ2 = 1.26. (Bottom) Two-dimensional thermodiffractogram obtained from neutron powder diffraction measurements of synthetic FeWO4 at D20, plotted on a logarithmic intensity scale. Magnetic Bragg reflections associated with the propagation vector k = (1/2, 0, 0) appear below approximately 62 K.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 59| Part 4| August 2026| Pages 1238-1246
https://doi.org/10.1107/S1600576726005297
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