Ferromagnetic resonance and relaxation studies in LPE–grown bismuth substituted europium iron garnet films

Abstract T he magnetization, g eff, and linewidth Δ H ∥ and Δ H ⊥ for liquid phase epitaxial growth thin films of composition Eu 3− x Bi x Fe 5 O 12 (0⩽ x ⩽1.3) have been studied in the temperature range 77–600 K. The magnetization is observed to increase in Bi 3+ concentration. On account of the presence of uniaxial anisotropy in these films, the resonance line width in the parallel configuration (Δ H ∥ ) and perpendicular configuration (Δ H ⊥ ) are different in magnitude and their variation with temperature also shows difference.