NMR determination of the fractal dimension in silica aerogels. Devreux, F., Boilot, J. P., Chaput, F., & Sapoval, B. Physical Review Letters, 65(5):614–617, July, 1990. Publisher: American Physical Society![NMR determination of the fractal dimension in silica aerogels [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Si29 nuclear relaxation experiments were performed in different forms of silica (alcogel, aerogel, amorphous, and crystallized) doped with paramagnetic impurities. Magic-angle spinning is used to quench the nuclear-spin diffusion. Under this condition, the saturation recovery of the Si29 magnetization follows a power law in a very large time range (up to 5 orders of magnitude). This nonexponential relaxation m(t)t reflects the mass distribution in the sample: M(r)rD with =D/6. In aerogels, the measured fractal dimension D2.2 is in agreement with that determined by small-angle x-ray scattering. In densified materials, a dimension D3 is actually observed. © 1990 The American Physical Society.
@article{Devreux1990,
title = {{NMR} determination of the fractal dimension in silica aerogels},
volume = {65},
issn = {0031-9007},
url = {https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.65.614},
doi = {10.1103/PhysRevLett.65.614},
abstract = {Si29 nuclear relaxation experiments were performed in different forms of silica (alcogel, aerogel, amorphous, and crystallized) doped with paramagnetic impurities. Magic-angle spinning is used to quench the nuclear-spin diffusion. Under this condition, the saturation recovery of the Si29 magnetization follows a power law in a very large time range (up to 5 orders of magnitude). This nonexponential relaxation m(t)t reflects the mass distribution in the sample: M(r)rD with =D/6. In aerogels, the measured fractal dimension D2.2 is in agreement with that determined by small-angle x-ray scattering. In densified materials, a dimension D3 is actually observed. © 1990 The American Physical Society.},
number = {5},
urldate = {2020-08-13},
journal = {Physical Review Letters},
author = {Devreux, F. and Boilot, J. P. and Chaput, F. and Sapoval, B.},
month = jul,
year = {1990},
note = {Publisher: American Physical Society},
pages = {614--617},
}
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