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The mobility of domain walls in YFeO3 is determined by calculating the damping of the uniform precession or k=0 spin-wave mode. The presence of antisymmetric exchange is explicitly taken into account in obtaining the spin-wave modes. The dominant spin-wave damping mechanism is found to be a four-magnon scattering process. This process leads to a calculated wall mobility that has the same order of magnitude and temperature dependence as that observed.
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Tsang et al. (1978) studied this question.
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