Fig. 4: Example neutron diffraction data showing magnetic Bragg reflections.
From: Multiple magnetic orders in LaFeAs1-xPxO uncover universality of iron-pnictide superconductors
Difference plots (black crosses) between neutron diffraction performed at temperatures above (red line) and below (blue line) magnetic transitions with magnetic Rietveld refinement plotted over difference (purple line). The two most intense magnetic peaks for each sample are labeled using the tetragonal unit cell notation. Representative examples of data for the three magnetic phases were selected. The peak at 5.7 Å in the x = 0.23 sample is from an impurity, La(OH)3. The peaks at ~3.4, and 4.6 Å in the x = 0.45 and x = 0.80 samples are from LaOH. The lanthanum hydroxides are estimated from refinements at ~1% by weight. Red tick marks are symmetry-allowed magnetic Bragg reflections.
