Fig. 3
From: Demonstration of Ru as the 4th ferromagnetic element at room temperature

Determination of Ru lattice parameters. a FFT of the 6 nm Ru film along the [111] zone axis, from indicated region of Fig. 2b, with the expected BCT grouping highlighted in yellow, and distortions in the tetragonal ordering are highlighted in red. Scale bar is 5 nm−1. b The expected [111] zone axis projection for BCT Ru, and by using the measured interatomic spacing and atomic plane angles, an estimate of c/a for a BCT structure can be calculated. The dashed red line shows the orientation of the lattice distortion