Figure 2 | NPG Asia Materials

Figure 2

From: Magnetic-field-induced spontaneous superlattice formation via spinodal decomposition in epitaxial strontium titanate thin films

Figure 2The alternative text for this image may have been generated using AI.

Crystal structures of Sr-Ti-O thin films deposited on a Nb-doped SrTiO3(001) single crystal. (a) XRD patterns for films deposited under 2 kG and 0 G magnetic fields for Sr/(Sr+Ti)=50.0 at.% composition. (b) XRD patterns for films deposited under 2 kG and 0 G magnetic fields for Sr/(Sr+Ti)=58.3 at.% composition. The closed circle denotes the main peak. Open circles denote satellite peaks. (c) Wide range XRD pattern for the film with a spontaneously formed superlattice. (d) Cross-sectional STEM image of a film with intensities of bright field (BF) and EDS integrated line scans for O K, Ti K and Sr L for the film deposited under a 2 kG magnetic field (shown in (b)). (e) Selected area electron diffraction patterns of cross sections of the Sr-Ti-O thin film deposited under a 2 kG magnetic field (zone axis: (010)) (shown in (d)). (f) Histogram of the intensity of the electron diffraction along the out-of-plane direction (shown in (e)). Satellite spots prove the superlattice formation.

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