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| Co–O–Co angle γ (deg) | dihedral angle δ (deg) | coupling |
|---|---|---|
| large (>97.0) | very small (≈1.0) | AF |
| small (<99.7) | large (>35.3) | F |
| larger (>99.7) | any value (0–90) | AF |
F: ferromagnetic coupling, AF: antiferromagnetic coupling.
