M ~ Σ_r R_T·R_D·R_S·cos(2πrF/B + φ)
F = ℏA_F / 2πe (Tesla)
R_T = X/sinh(X), X = 2π²rk_Bm*T/eℏB
R_D = exp(-2π²m*k_BT_D/eℏB)
Quantum oscillations in magnetization arise from Landau levels crossing the Fermi energy as B varies. Each extremal cross-section of the Fermi surface contributes a frequency F = ℏA_F/2πe, enabling Fermi surface mapping.