Fig. 4: Naturally occurring ferroelectric domain pattern in hexagonal YMnO3.
From: Imaging ferroelectric domains with a single-spin scanning quantum sensor
a, NV electrometry on YMnO3. Domains appear with constant contrast, which may be attributed to tip oscillations that deviate from pure shear mode (Extended Data Fig. 1). Bright features reflect patch charges at topographic defects. b, Out-of-plane PFM on YMnO3 over the same region. Artefacts from topographic cross-talk are not observed in panel a. White arrows indicate (1) a vortex domain and (2) a 180° domain wall. Scale bar, 5 μm.
