Abstract
Ni-Mo amorphous films were obtained by 200 keV xenon ion mixing at room temperature to dosages higher than 7*1014 ion cm-2. It was found, for the first time, that when the irradiation dose went up to 7*1015 ion cm-2, many odd lines appeared in the amorphous matrix. After excluding various possible explanations, the authors attribute the observed loops to line defects, i.e., disclinations in amorphous solids. Rich microstructures pertinent to disclination loops are described in detail. Scaling analysis showed that the observed disclinations shared a common fractal dimension in the small length scale. Moreover, approximation of gauge theory in the limit of elastic continuum media enables the authors to account for their anomalous properties successfully.
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