Table 1.

(J₁, J₂, J₃) magnetic exchange model, relative total energy ΔE (meV/cell) and total magnetic moments (Tot, μ_B/fu) of the FGT/CS.

FGT/CS	Energya	Δ (meV/fu)	Tot (μB/fu)
FM	−J1−J3+J2	0	7.89
Layered-AF1	J1+J3+J2	90	0.30
Layered-AF2	−J1+J3−J2	14	0.46
Layered-AF3	J1−J3−J2	80	7.16

^aJ₁ = 39 meV, J₂ = −1 meV, J₃ = 6 meV are derived.