Fig. 2
From: Picometer polar atomic displacements in strontium titanate determined by resonant X-ray diffraction
Temperature response of bulk SrTiO3. Energy dependencies of the peak intensity of the 007 Bragg reflection near the Sr-K edge are shown for different temperatures. Open circles are the measured values normalized to be on the same scale for each temperature. Error bars indicate the expected SD calculated from the incident and diffracted beam intensity. Solid lines show the fit after varying the atomic displacement parameters based on absorption corrected kinematic diffraction. The distinct shift of the minimum position is a result of changing Debye–Waller factors due to thermal displacement
