Fig. 4
From: Nanoscale control of competing interactions and geometrical frustration in a dipolar trident lattice
Experimental low-temperature observations. a–c XMCD images of equilibrium configurations of the dipolar trident lattice with various lattice spacings (a = 33 nm = const, b = 33, 50, and 66 nm) recorded at T = 150 K (blocking temperature T B = 160 K). The red arrow indicates the direction the X-ray propagation vector. The yellow scale bar indicates a length of ~600 nm. d–f Magnetic scattering patterns of moment configurations achieved in dipolar trident lattices with lattice parameters d a = 33 nm and b = 33 nm, e a = 33 nm and b = 50 nm, and f a = 33 nm and b = 66 nm, following thermal annealing. While long-range order with relatively sharp peaks is seen for b = 33 nm and b = 66 nm, the diffuse patterns for b = 50 nm indicate highly disordered moment configurations with short-range correlations
