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Neutron Diffraction Analysis of NASICON-type Li1+xAlxTi2-xP3O12
Ist Teil von
Zeitschrift für anorganische und allgemeine Chemie (1950), 2014-12, Vol.640 (15), p.3070-3073
Ort / Verlag
Weinheim: WILEY-VCH Verlag
Erscheinungsjahr
2014
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Powder neutron diffraction analysis was carried out on a sample of Li1+xAlxTi2–xP3O12 at two temperatures, 10 K and 300 K. After heat treatment the material contained small amounts of LiTiOPO4 as impurity. Refinement of the neutron diffraction data confirmed that the main phase crystallized with a NASICON structure. No structural change was observed at low temperature. Al atoms randomly substituted Ti atoms, and additional Li atoms occupied a second site in the crystal structure. A detailed analysis of the diffraction data, including the inspection of Fourier difference maps, indicated that these excess Li+ ions occupied a 6a site within the ion conduction channels of the NASICON‐type structure instead of the formerly reported 18e or 36f sites.