Disks of poly- and monocrystalline nickel were investigated at 25 °C at 8.6 GHz. After careful preparation single crystals show linewidths down to 102 Oe in the in-plane case, and Ɗω/γ, calculated from the measured ƊH, is found to be nearly independent of the angle. Plastic deformation causes a linebroadening, which is strongly angular dependent. For the parallel and the perpendicular case the increase ratio is 5 : 1 for single crystals. The angular dependence of Ɗω/γ in annealed polycrystals results mainly from three contributions : single crystal linewidth, broadening described by the independent grain theory, and a contribution caused by dislocations.
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Anders et al. (1971) studied this question.
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