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Multifractal spectra of growing clusters in nanoscale characterized by small angle x-ray scattering

Shao Yuan-Zhi Zhong Wei-Rong Ren Shan Cai Zhi-Su Gong Lei

Multifractal spectra of growing clusters in nanoscale characterized by small angle x-ray scattering

Shao Yuan-Zhi, Zhong Wei-Rong, Ren Shan, Cai Zhi-Su, Gong Lei
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  • Abstract views:  3194
  • PDF Downloads:  794
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  • Received Date:  15 July 2004
  • Accepted Date:  16 November 2004
  • Published Online:  07 July 2005

Multifractal spectra of growing clusters in nanoscale characterized by small angle x-ray scattering

  • 1. 中山大学理工学院物理系,广州 510275

Abstract: Small angle x-ray scattering (SAXS) method was adopted to investigate the characteristics of growth fractal of two sorts of typical nanoscaled clusters, i.e. g rowing in both ultrafine Ni powders synthesized by chemical reaction and Finemet (Fe73.5Cu1Nb3Si13.5B9) a morphous ribbon by physical crystal lization annealing. The SAXS measurement discloses definitely the existence of d istinct mass multifractal patterns within ultrafine Ni granules and crystallizin g Finemet ribbon. The multifractal spectra of the clusters mentioned above sugge st the occurrence of inhomogeneous distribution of constituent elements and grow th fractal during the formation of those nanoscale clusters. The multifractal sp ectra of ultrafine Ni powders prepared using a variety of procedures take on an obvious difference in shape, indicating the substantial influence of preparation process on diffusion of constituent elements and the growth mechanism of cluste rs. The crystallization annealing processes, however, affect the multifractal sp ectra of Finemet alloy slightly.

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