ISSN:
1434-6036
Keywords:
PACS. 61.43.Fs Glasses – 68.65.-k Low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties – 76.80.+y Mössbauer effect; other gamma-ray spectroscopy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: The microscopic dynamics of dibutylphthalate/ferrocene in nanoporous silica matrices with pore sizes of 25, 50, 75, and 200 Å, respectively, has been investigated in a temperature range between 70 and 200 K by nuclear resonant scattering of synchrotron radiation. The decay of the coherently forward scattered signal is enhanced owing to the diffusive motion of resonant nuclei on the timescale of the nuclear resonance lifetime. This enhancement contains information about the self-correlation function for a fixed wave vector k = 7.3 Å-1. In the viscous regime and for 25 Å pores the diffusional dynamics is clearly slowed down when compared to the bulk material.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510170107
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