Fig. 4: TEM characterization and out-of-plane PFM phase images of BSCNT0 and BSCNT0.30 ceramics. | Nature Communications

Fig. 4: TEM characterization and out-of-plane PFM phase images of BSCNT0 and BSCNT0.30 ceramics.

From: Optimizing high-temperature energy storage in tungsten bronze-structured ceramics via high-entropy strategy and bandgap engineering

Fig. 4

a, b TEM image patterns take along [110] zone from BSCNT0 and BSCNT0.30 samples, (c, d) SAED patterns take along [110] zone from BSCNT0 and BSCNT0.3 samples. The inset of (d) displays the measurement schematic for determining the incommensurate superlattice incommensurability parameter δ. The white arrows indicate the appearance of the satellite reflections for incommensurate modulation in b and d. e Atomic-resolution HAADF-STEM image along [110] of the BSCNT0.30 ceramic, and the arrows show the displacement of B-site cations corresponding to different polarization directions. f, g Out-of-plane PFM phase images of samples BSCNT0 and BSCNT0.30 after poling treatment with ±10 V and then measuring after a certain relaxation time.

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