Abstract
The frequency-dependent loss due to twist disclinations is studied by treating the disclination as a damped oscillating heterogeneous string. The damping parameter is found to vary along the disclination line as z 2 while the decrement has a resonant type behavior similar to that for dislocations. The internal friction is predicted to be proportional to the fourth power of disclination length, which can be tested in experiments with rotationally disordered crystals.
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