Relaxation Effects in Antiferromagnetic Ferrous Carbonate
作者： Hang Nam Ok
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摘要: M\"ossbauer studies of antiferromagnetic FeC${\mathrm{O}}_{3}$ below and above the N\'eel temperature show an asymmetric line broadening, a constant value 184 kOe magnetic hyperfine field from $0 \mathrm{to} \frac{1}{2}{T}_{N}$. These phenomena are explained using Ising model with slow electron relaxation. The relaxation rate decreases decreasing temperature, suggesting spin-lattice was found to be (38.3\ifmmode\pm\else\textpm\fi{}0.3)\ifmmode^\circ\else\textdegree\fi{}K, which is 3.3\ifmmode^\circ\else\textdegree\fi{}K higher than that measured by neutron diffraction.
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