Figure 4
The magnetic structure of SYCO.
(a) Illustration of the new crystal structure of SYCO with fully oxygenated (R1-R2) and oxygen deficient (D1-D2) layers. (b) The oxygen deficient layer (D1) and the fully oxygenated layer (R1) as viewed along the [001] direction, the arrows show the direction of the magnetization for each cobalt atom. In the fully oxygenated layers, columns with intermediate spin (−1.65 μB) along the [110]p and 
directions are observed. The distances displayed are the projected O-O spacing viewed along 
directions, obtained from atomic structure model. (c) Schematic of the Co-O bonds associated with the alternating high spin state (HS) and intermediate spin state (IS) cobalt. (d) Simulated annular bright-field [100]p images using the new model with intensity profile across the dashed rectangle through the oxygen-deficient Co-O plane. (e) Simulated annular bright-field 
image using the new model along with O-O spacing within the fully oxygenated Co-O layer.
