Fig. 4
From: Picometer polar atomic displacements in strontium titanate determined by resonant X-ray diffraction
Energy dependence for several Bragg reflections of the MFP phase. The Bragg intensity (open circles) was measured selectively for the strained MFP layer formed on the SrTiO3 substrate. Solid lines show the calculation after refinement of z-positions of each atom in the unit cell. Error bars indicate the standard deviation calculated from the incident and diffracted beam intensity. For better visibility, the spectra have successively been scaled by a factor of 10 in the same order as they appear in the legend. The energy dependence of the 007 reflection differs strongly from the one acquired at room temperature before formation (compare Fig. 2). This clearly indicates a phase transition since lattice constants do not influence the energy dependencies
