Ionic diffusion in intercalated fullerides by high resolution neutron spectroscopy
An extraordinary superionic conductivity has been observed in the polymeric phase of the intercalated fulleride Li4C60, due to bulk Li+ ions mobility, which can move through the interstitial voids of the monoclinic lattice. Although extensive investigations of the structural, dynamical and superionic conductivity properties have been performed, a clear picture of the Li+ ions motions inside the polymer is still missing. Here we propose to investigate the slow dynamics of Lithia in the polymeric phase of Li4C60 by means of high resolution neutron spectroscopy, using the spin-echo IN11 spectrometer at the ILL, from room temperature to 500K. From the temperature and Q-dependence of the I(Q,t), we expect to get more information about the energy activation barriers and the mechanism of diffusive processes.
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CAVALLARI Chiara; ARAMINI Matteo; BRUNELLI Michela; FOUQUET Peter; Mattia Gaboardi; PONTIROLI Daniele; RICCO Mauro and ROLS Stephane. (2013). Ionic diffusion in intercalated fullerides by high resolution neutron spectroscopy. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-03-123
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