Figure 3: Changes in the room temperature crystal structure with cooling rate.
From: Tuning magnetic spirals beyond room temperature with chemical disorder
(a) Relative change (%) of the lattice parameters a and c with respect to those of the sample with the lowest TN2. (b) Tensile (c/2a<1) tetragonal distortion. (c) Thickness of the Y-containing separating layers (d1). (d) Thickness of the bipyramid layers (d2). The right vertical axis in c and d indicates the percent contribution of d1 and d2 to the variation of the c axis with the cooling rate. Dashed lines are guides for the eye. All values were extracted from the combined (neutron and X-ray synchrotron) Rietveld fits of the powder diffraction data at room temperature. The error bars of the lattice parameters and the interatomic distances are the standard deviations obtained from the fits of the crystal structure using the FullProf Suite Rietveld package41,42. In the case of a and b, they are smaller than the marker size.
