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DC Field | Value | Language |
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dc.contributor.author | McLin, M.G. | en_US |
dc.contributor.author | Wintersgill, M.C. | en_US |
dc.contributor.author | Fontanella, J.J. | en_US |
dc.contributor.author | Chen, R.S. | en_US |
dc.contributor.author | Jayakody, J.R.P. | en_US |
dc.contributor.author | Greenbaum, S.G. | en_US |
dc.date.accessioned | 2014-11-19T04:44:25Z | - |
dc.date.available | 2014-11-19T04:44:25Z | - |
dc.date.issued | 1993 | - |
dc.identifier.uri | http://repository.kln.ac.lk/handle/123456789/3957 | - |
dc.description.abstract | Audio frequency electrical conductivity/dielectric relaxation and nuclear magnetic resonance studies of NAFION-117 have been carried out at pressures up to 0.3 GPa (3 kbar). For some samples, the electrical conductivity exhibits dispersion typical of hopping conductivity in an amorphous material, ?=?0?m. The values of m are sample dependent and vary from about 0.55 to 0.75. In addition, the values of m are not strongly pressure sensitive. At a given frequency, the electrical conductivity tends to decrease as pressure increases and yield activation volumes on the order of 5 to 10 cm3/mol. The activation volume determined from the NMR spin-lattice relaxation time measurements are also sample dependent. The data shown correspond to an activation volume of about 8.6 cm3/mol. The results of the high pressure electrical conductivity studies also yield activation volumes on the order of that determined via NMR. | en_US |
dc.publisher | Solid State Ionics | en_US |
dc.subject | High pressure NMR | en_US |
dc.title | High pressure studies of hydrated NAFION membranes: Dielectric relaxation and deuteron NMR | - |
dc.type | article | en_US |
dc.identifier.department | Physics | en_US |
Appears in Collections: | Physics |
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