RESEARCH / A0042
Biphasic High‐Entropy Heterojunctions Enabled by Perovskite Transformation
Read the original paper · 10.1002/adma.74271 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
FIGURE 3 Strain distribution and atomic-scale characterization at the HEA–HEO interface. (a) HAADF–STEM image of the HEA–HEO interface. (b) Local magnification of panel (a) showing the HEA (111) plane and HEO (002) plane. (c) FFT pattern corresponding to (b), indexed with HEA [110] and HEO [001] crystal zone axes. (d–g) εxx strain distribution maps and corresponding histograms for HEA (d,e) and HEO (f,g), respectively. (h) εxy strain distribution across the HEA–HEO interface. (i) Strain distribution curve along the marked line in (h). (j) Co K-edge XANES spectra of HEA–HEO, HE–LCO, and Co foil. (k) k2-weighted EXAFS Fourier transform spectra for the corresponding samples.